/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/safe018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:58:10,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:58:10,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:58:10,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:58:10,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:58:10,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:58:10,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:58:10,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:58:10,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:58:10,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:58:10,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:58:10,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:58:10,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:58:10,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:58:10,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:58:10,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:58:10,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:58:10,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:58:10,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:58:10,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:58:10,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:58:10,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:58:10,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:58:10,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:58:10,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 23:58:10,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 23:58:10,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 23:58:10,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 23:58:10,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 23:58:10,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 23:58:10,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:58:10,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:58:10,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:58:10,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:58:10,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:58:10,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:58:10,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:58:10,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:58:10,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:58:10,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:58:10,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:58:10,544 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 23:58:10,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:58:10,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:58:10,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:58:10,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:58:10,575 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:58:10,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:58:10,576 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:58:10,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:58:10,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:58:10,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:58:10,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:58:10,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:58:10,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:58:10,578 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:58:10,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:58:10,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:58:10,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:58:10,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:58:10,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:58:10,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:58:10,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:58:10,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:58:10,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:58:10,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:58:10,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:58:10,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:58:10,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:58:10,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:58:10,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:58:10,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:58:11,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:58:11,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:58:11,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:58:11,031 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:58:11,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-11-11 23:58:11,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc67ab8e/3ef00e1738b84eeca7faa5322e16ad45/FLAGdaef1036f [2020-11-11 23:58:11,964 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:58:11,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-11-11 23:58:11,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc67ab8e/3ef00e1738b84eeca7faa5322e16ad45/FLAGdaef1036f [2020-11-11 23:58:12,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc67ab8e/3ef00e1738b84eeca7faa5322e16ad45 [2020-11-11 23:58:12,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:58:12,245 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:58:12,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:58:12,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:58:12,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:58:12,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:12,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6048bdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12, skipping insertion in model container [2020-11-11 23:58:12,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:12,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:58:12,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:58:12,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:58:12,803 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:58:12,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:58:12,944 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:58:12,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12 WrapperNode [2020-11-11 23:58:12,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:58:12,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:58:12,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:58:12,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:58:12,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:12,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:12,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:58:12,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:58:12,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:58:12,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:58:13,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:13,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:13,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:13,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:13,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:13,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:13,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (1/1) ... [2020-11-11 23:58:13,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:58:13,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:58:13,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:58:13,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:58:13,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (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 23:58:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:58:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:58:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:58:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:58:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:58:13,154 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:58:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:58:13,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:58:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:58:13,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:58:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:58:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:58:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:58:13,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:58:13,157 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 23:58:13,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:58:13,645 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:58:13,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:58:13 BoogieIcfgContainer [2020-11-11 23:58:13,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:58:13,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:58:13,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:58:13,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:58:13,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:58:12" (1/3) ... [2020-11-11 23:58:13,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e69ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:58:13, skipping insertion in model container [2020-11-11 23:58:13,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:58:12" (2/3) ... [2020-11-11 23:58:13,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e69ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:58:13, skipping insertion in model container [2020-11-11 23:58:13,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:58:13" (3/3) ... [2020-11-11 23:58:13,657 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2020-11-11 23:58:13,674 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:58:13,675 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:58:13,679 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:58:13,680 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:58:13,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,717 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,717 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,717 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,717 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,718 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,718 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,718 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,719 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,720 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,720 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,720 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,720 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,720 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,721 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,721 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,721 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,721 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,722 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,722 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,722 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,722 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,723 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,723 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,724 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,724 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,724 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,724 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,728 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,735 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,739 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:58:13,744 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:58:13,759 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:58:13,785 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:58:13,786 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:58:13,786 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:58:13,786 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:58:13,786 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:58:13,786 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:58:13,786 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:58:13,786 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:58:13,800 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:58:13,802 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-11 23:58:13,805 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-11 23:58:13,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-11 23:58:13,853 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-11 23:58:13,853 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:58:13,858 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 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-11 23:58:13,861 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-11 23:58:17,218 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-11-11 23:58:17,451 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-11-11 23:58:18,327 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-11 23:58:18,440 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:58:18,689 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-11 23:58:18,802 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:58:18,848 INFO L131 LiptonReduction]: Checked pairs total: 2543 [2020-11-11 23:58:18,848 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-11 23:58:18,856 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-11-11 23:58:18,892 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 224 states have (on average 2.830357142857143) internal successors, (634), 225 states have internal predecessors, (634), 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 23:58:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 224 states have (on average 2.830357142857143) internal successors, (634), 225 states have internal predecessors, (634), 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 23:58:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:58:18,903 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:18,904 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:18,904 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:18,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:18,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1083559104, now seen corresponding path program 1 times [2020-11-11 23:58:18,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:18,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114473130] [2020-11-11 23:58:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:19,162 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 23:58:19,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114473130] [2020-11-11 23:58:19,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:19,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:58:19,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634386855] [2020-11-11 23:58:19,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:58:19,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:19,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:58:19,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:58:19,191 INFO L87 Difference]: Start difference. First operand has 226 states, 224 states have (on average 2.830357142857143) internal successors, (634), 225 states have internal predecessors, (634), 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 23:58:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:19,241 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-11-11 23:58:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:58:19,243 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 23:58:19,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:19,259 INFO L225 Difference]: With dead ends: 214 [2020-11-11 23:58:19,259 INFO L226 Difference]: Without dead ends: 166 [2020-11-11 23:58:19,260 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 23:58:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-11 23:58:19,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-11-11 23:58:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.672727272727273) internal successors, (441), 165 states have internal predecessors, (441), 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 23:58:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-11-11 23:58:19,331 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-11-11 23:58:19,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:19,332 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-11-11 23:58:19,332 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 23:58:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-11-11 23:58:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:58:19,334 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:19,334 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:19,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:58:19,334 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:19,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:19,335 INFO L82 PathProgramCache]: Analyzing trace with hash -768963921, now seen corresponding path program 1 times [2020-11-11 23:58:19,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:19,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768513431] [2020-11-11 23:58:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:19,434 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 23:58:19,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768513431] [2020-11-11 23:58:19,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:19,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:58:19,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361863843] [2020-11-11 23:58:19,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:58:19,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:58:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:58:19,439 INFO L87 Difference]: Start difference. First operand 166 states and 441 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 23:58:19,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:19,497 INFO L93 Difference]: Finished difference Result 184 states and 465 transitions. [2020-11-11 23:58:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:58:19,499 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 23:58:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:19,500 INFO L225 Difference]: With dead ends: 184 [2020-11-11 23:58:19,501 INFO L226 Difference]: Without dead ends: 88 [2020-11-11 23:58:19,502 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 23:58:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-11 23:58:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-11-11 23:58:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3793103448275863) internal successors, (207), 87 states have internal predecessors, (207), 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 23:58:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 207 transitions. [2020-11-11 23:58:19,511 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 207 transitions. Word has length 9 [2020-11-11 23:58:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:19,512 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 207 transitions. [2020-11-11 23:58:19,512 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 23:58:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 207 transitions. [2020-11-11 23:58:19,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:58:19,513 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:19,513 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:19,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:58:19,514 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:19,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:19,514 INFO L82 PathProgramCache]: Analyzing trace with hash -643934094, now seen corresponding path program 1 times [2020-11-11 23:58:19,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:19,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294388045] [2020-11-11 23:58:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:19,581 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 23:58:19,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294388045] [2020-11-11 23:58:19,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:19,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:58:19,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721081766] [2020-11-11 23:58:19,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:58:19,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:19,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:58:19,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:58:19,584 INFO L87 Difference]: Start difference. First operand 88 states and 207 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) 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 23:58:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:19,607 INFO L93 Difference]: Finished difference Result 118 states and 268 transitions. [2020-11-11 23:58:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:58:19,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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 23:58:19,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:19,609 INFO L225 Difference]: With dead ends: 118 [2020-11-11 23:58:19,609 INFO L226 Difference]: Without dead ends: 64 [2020-11-11 23:58:19,610 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 23:58:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-11 23:58:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-11-11 23:58:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 63 states have internal predecessors, (137), 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 23:58:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2020-11-11 23:58:19,618 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2020-11-11 23:58:19,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:19,618 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2020-11-11 23:58:19,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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 23:58:19,619 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2020-11-11 23:58:19,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:58:19,620 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:19,620 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:19,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:58:19,620 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:19,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:19,621 INFO L82 PathProgramCache]: Analyzing trace with hash -942779853, now seen corresponding path program 1 times [2020-11-11 23:58:19,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:19,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570111485] [2020-11-11 23:58:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:19,762 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 23:58:19,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570111485] [2020-11-11 23:58:19,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:19,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:58:19,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481486359] [2020-11-11 23:58:19,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:58:19,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:19,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:58:19,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:58:19,766 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 23:58:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:19,800 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2020-11-11 23:58:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:58:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 23:58:19,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:19,801 INFO L225 Difference]: With dead ends: 77 [2020-11-11 23:58:19,801 INFO L226 Difference]: Without dead ends: 56 [2020-11-11 23:58:19,802 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 23:58:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-11 23:58:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-11 23:58:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 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 23:58:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2020-11-11 23:58:19,808 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2020-11-11 23:58:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:19,809 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2020-11-11 23:58:19,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 23:58:19,809 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2020-11-11 23:58:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:58:19,810 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:19,810 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:19,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:58:19,810 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:19,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:19,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1183327337, now seen corresponding path program 1 times [2020-11-11 23:58:19,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:19,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38716309] [2020-11-11 23:58:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:19,874 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 23:58:19,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38716309] [2020-11-11 23:58:19,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:19,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:58:19,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071263366] [2020-11-11 23:58:19,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:58:19,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:19,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:58:19,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:58:19,877 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand has 5 states, 4 states have (on average 3.25) 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 23:58:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:19,918 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-11-11 23:58:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:58:19,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) 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 23:58:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:19,919 INFO L225 Difference]: With dead ends: 57 [2020-11-11 23:58:19,920 INFO L226 Difference]: Without dead ends: 42 [2020-11-11 23:58:19,920 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:58:19,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-11 23:58:19,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-11 23:58:19,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 41 states have internal predecessors, (69), 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 23:58:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-11-11 23:58:19,924 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2020-11-11 23:58:19,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:19,924 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-11-11 23:58:19,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) 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 23:58:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-11-11 23:58:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:58:19,926 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:19,926 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:19,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:58:19,926 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:19,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:19,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1970744087, now seen corresponding path program 1 times [2020-11-11 23:58:19,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:19,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766547657] [2020-11-11 23:58:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:20,024 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 23:58:20,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766547657] [2020-11-11 23:58:20,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:20,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:58:20,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788608462] [2020-11-11 23:58:20,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:58:20,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:20,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:58:20,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:58:20,028 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 23:58:20,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:20,079 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-11-11 23:58:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:58:20,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 23:58:20,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:20,080 INFO L225 Difference]: With dead ends: 39 [2020-11-11 23:58:20,080 INFO L226 Difference]: Without dead ends: 33 [2020-11-11 23:58:20,081 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-11 23:58:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-11 23:58:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-11 23:58:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 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 23:58:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-11-11 23:58:20,084 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-11-11 23:58:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:20,084 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-11-11 23:58:20,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 23:58:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-11-11 23:58:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-11 23:58:20,085 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:58:20,085 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:58:20,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:58:20,086 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:58:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:58:20,086 INFO L82 PathProgramCache]: Analyzing trace with hash 194810732, now seen corresponding path program 1 times [2020-11-11 23:58:20,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:58:20,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204288577] [2020-11-11 23:58:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:58:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:58:20,149 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 23:58:20,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204288577] [2020-11-11 23:58:20,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:58:20,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:58:20,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469545403] [2020-11-11 23:58:20,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:58:20,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:58:20,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:58:20,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:58:20,151 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 23:58:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:58:20,170 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-11-11 23:58:20,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:58:20,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2020-11-11 23:58:20,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:58:20,172 INFO L225 Difference]: With dead ends: 32 [2020-11-11 23:58:20,172 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:58:20,173 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:58:20,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:58:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:58:20,174 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 23:58:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:58:20,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-11 23:58:20,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:58:20,174 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:58:20,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 23:58:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:58:20,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:58:20,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:58:20,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:58:20 BasicIcfg [2020-11-11 23:58:20,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:58:20,182 INFO L168 Benchmark]: Toolchain (without parser) took 7941.79 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 277.4 MB in the beginning and 278.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 61.2 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:20,185 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:58:20,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.43 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 246.1 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:20,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.41 ms. Allocated memory is still 302.0 MB. Free memory was 246.1 MB in the beginning and 244.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:20,188 INFO L168 Benchmark]: Boogie Preprocessor took 55.26 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 285.0 MB in the end (delta: -40.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:20,189 INFO L168 Benchmark]: RCFGBuilder took 594.35 ms. Allocated memory is still 302.0 MB. Free memory was 285.0 MB in the beginning and 261.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:20,192 INFO L168 Benchmark]: TraceAbstraction took 6529.74 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 260.7 MB in the beginning and 278.5 MB in the end (delta: -17.7 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:58:20,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 696.43 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 246.1 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.41 ms. Allocated memory is still 302.0 MB. Free memory was 246.1 MB in the beginning and 244.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 55.26 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 285.0 MB in the end (delta: -40.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.0 GB. * RCFGBuilder took 594.35 ms. Allocated memory is still 302.0 MB. Free memory was 285.0 MB in the beginning and 261.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6529.74 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 260.7 MB in the beginning and 278.5 MB in the end (delta: -17.7 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 913 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.0s, 85 PlacesBefore, 30 PlacesAfterwards, 78 TransitionsBefore, 20 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 72 TotalNumberOfCompositions, 2543 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: 6.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 98 SDtfs, 141 SDslu, 102 SDs, 0 SdLazy, 64 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 2496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...