/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/safe000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:37:00,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:37:00,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:37:00,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:37:00,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:37:00,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:37:00,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:37:00,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:37:00,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:37:00,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:37:00,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:37:00,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:37:00,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:37:00,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:37:00,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:37:00,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:37:00,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:37:00,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:37:00,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:37:00,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:37:00,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:37:00,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:37:00,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:37:00,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:37:00,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 23:37:00,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 23:37:00,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 23:37:00,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 23:37:00,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 23:37:00,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 23:37:00,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:37:00,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:37:00,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:37:00,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:37:00,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:37:00,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:37:00,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:37:00,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:37:00,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:37:00,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:37:00,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:37:00,568 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 23:37:00,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:37:00,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:37:00,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:37:00,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:37:00,626 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:37:00,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:37:00,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:37:00,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:37:00,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:37:00,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:37:00,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:37:00,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:37:00,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:37:00,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:37:00,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:37:00,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:37:00,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:37:00,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:37:00,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:37:00,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:37:00,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:37:00,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:37:00,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:37:00,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:37:00,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:37:00,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:37:00,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:37:00,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:37:00,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:37:01,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:37:01,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:37:01,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:37:01,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:37:01,104 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:37:01,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-11-11 23:37:01,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6355ecac0/ca66269779604dd78d5464ac16d00e44/FLAGbd3eab383 [2020-11-11 23:37:02,052 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:37:02,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-11-11 23:37:02,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6355ecac0/ca66269779604dd78d5464ac16d00e44/FLAGbd3eab383 [2020-11-11 23:37:02,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6355ecac0/ca66269779604dd78d5464ac16d00e44 [2020-11-11 23:37:02,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:37:02,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:37:02,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:37:02,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:37:02,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:37:02,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:02,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bd3404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02, skipping insertion in model container [2020-11-11 23:37:02,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:02,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:37:02,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:37:02,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:37:02,744 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:37:02,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:37:02,988 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:37:02,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02 WrapperNode [2020-11-11 23:37:02,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:37:02,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:37:02,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:37:02,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:37:03,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:03,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:03,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:37:03,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:37:03,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:37:03,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:37:03,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:03,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:03,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:03,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:03,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:03,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:03,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (1/1) ... [2020-11-11 23:37:03,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:37:03,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:37:03,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:37:03,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:37:03,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (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 23:37:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:37:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:37:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:37:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:37:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:37:03,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:37:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:37:03,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:37:03,172 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:37:03,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:37:03,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:37:03,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:37:03,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:37:03,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:37:03,175 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 23:37:03,765 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:37:03,766 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:37:03,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:37:03 BoogieIcfgContainer [2020-11-11 23:37:03,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:37:03,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:37:03,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:37:03,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:37:03,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:37:02" (1/3) ... [2020-11-11 23:37:03,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fded024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:37:03, skipping insertion in model container [2020-11-11 23:37:03,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:02" (2/3) ... [2020-11-11 23:37:03,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fded024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:37:03, skipping insertion in model container [2020-11-11 23:37:03,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:37:03" (3/3) ... [2020-11-11 23:37:03,782 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2020-11-11 23:37:03,798 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:37:03,799 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:37:03,803 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:37:03,804 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:37:03,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,856 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,857 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,857 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,857 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,857 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,857 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,860 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,860 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,860 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,864 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,866 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,869 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,881 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,881 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,881 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,881 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,891 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,892 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,892 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,892 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,896 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,896 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,897 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,897 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:03,899 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:37:03,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:37:03,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:37:03,935 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:37:03,935 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:37:03,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:37:03,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:37:03,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:37:03,936 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:37:03,936 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:37:03,948 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:37:03,951 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-11 23:37:03,954 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-11 23:37:03,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 23:37:04,000 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-11 23:37:04,000 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:37:04,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 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. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-11 23:37:04,008 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-11 23:37:07,107 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-11 23:37:07,280 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-11 23:37:07,845 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-11 23:37:07,963 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:37:08,227 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-11 23:37:08,333 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:37:08,483 INFO L131 LiptonReduction]: Checked pairs total: 2870 [2020-11-11 23:37:08,484 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-11 23:37:08,491 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-11 23:37:08,525 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 23:37:08,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 23:37:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:37:08,537 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:08,538 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:08,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:08,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:08,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2120671033, now seen corresponding path program 1 times [2020-11-11 23:37:08,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:08,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644240803] [2020-11-11 23:37:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:08,736 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 23:37:08,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644240803] [2020-11-11 23:37:08,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:08,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:37:08,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307239006] [2020-11-11 23:37:08,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-11 23:37:08,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:08,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-11 23:37:08,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:37:08,763 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 2 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 23:37:08,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:08,798 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-11 23:37:08,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-11 23:37:08,799 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 23:37:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:08,816 INFO L225 Difference]: With dead ends: 362 [2020-11-11 23:37:08,817 INFO L226 Difference]: Without dead ends: 298 [2020-11-11 23:37:08,818 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:37:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-11 23:37:08,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-11 23:37:08,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) 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 23:37:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-11 23:37:08,899 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-11 23:37:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:08,900 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-11 23:37:08,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 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 23:37:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-11 23:37:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:37:08,902 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:08,902 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:08,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:37:08,902 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:08,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:08,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1316261025, now seen corresponding path program 1 times [2020-11-11 23:37:08,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:08,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162716314] [2020-11-11 23:37:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:09,032 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 23:37:09,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162716314] [2020-11-11 23:37:09,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:09,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:37:09,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656478700] [2020-11-11 23:37:09,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:37:09,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:09,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:37:09,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:37:09,037 INFO L87 Difference]: Start difference. First operand 298 states and 864 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 23:37:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:09,082 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-11 23:37:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:37:09,083 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 23:37:09,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:09,087 INFO L225 Difference]: With dead ends: 330 [2020-11-11 23:37:09,087 INFO L226 Difference]: Without dead ends: 266 [2020-11-11 23:37:09,088 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 23:37:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-11 23:37:09,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-11 23:37:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.8377358490566036) internal successors, (752), 265 states have internal predecessors, (752), 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 23:37:09,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-11 23:37:09,111 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-11 23:37:09,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:09,111 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-11 23:37:09,111 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 23:37:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-11 23:37:09,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-11 23:37:09,113 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:09,113 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:09,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:37:09,113 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:09,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1092775218, now seen corresponding path program 1 times [2020-11-11 23:37:09,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:09,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409998370] [2020-11-11 23:37:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:09,228 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 23:37:09,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409998370] [2020-11-11 23:37:09,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:09,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:37:09,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508409132] [2020-11-11 23:37:09,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:37:09,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:09,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:37:09,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:37:09,231 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 23:37:09,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:09,340 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-11-11 23:37:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:37:09,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2020-11-11 23:37:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:09,349 INFO L225 Difference]: With dead ends: 290 [2020-11-11 23:37:09,349 INFO L226 Difference]: Without dead ends: 242 [2020-11-11 23:37:09,350 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 23:37:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-11 23:37:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-11-11 23:37:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.780082987551867) internal successors, (670), 241 states have internal predecessors, (670), 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 23:37:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-11-11 23:37:09,385 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-11-11 23:37:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:09,386 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-11-11 23:37:09,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 23:37:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-11-11 23:37:09,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:37:09,391 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:09,391 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:09,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:37:09,391 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:09,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:09,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1615070613, now seen corresponding path program 1 times [2020-11-11 23:37:09,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:09,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665723170] [2020-11-11 23:37:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:09,487 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 23:37:09,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665723170] [2020-11-11 23:37:09,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:09,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:37:09,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959202595] [2020-11-11 23:37:09,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:37:09,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:09,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:37:09,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:37:09,490 INFO L87 Difference]: Start difference. First operand 242 states and 670 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 23:37:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:09,538 INFO L93 Difference]: Finished difference Result 266 states and 707 transitions. [2020-11-11 23:37:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:37:09,541 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 23:37:09,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:09,543 INFO L225 Difference]: With dead ends: 266 [2020-11-11 23:37:09,543 INFO L226 Difference]: Without dead ends: 230 [2020-11-11 23:37:09,543 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 23:37:09,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-11 23:37:09,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-11-11 23:37:09,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.7336244541484715) internal successors, (626), 229 states have internal predecessors, (626), 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 23:37:09,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 626 transitions. [2020-11-11 23:37:09,559 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 626 transitions. Word has length 11 [2020-11-11 23:37:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:09,559 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 626 transitions. [2020-11-11 23:37:09,559 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 23:37:09,559 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 626 transitions. [2020-11-11 23:37:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:37:09,561 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:09,561 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:09,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:37:09,562 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:09,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:09,562 INFO L82 PathProgramCache]: Analyzing trace with hash -260157625, now seen corresponding path program 1 times [2020-11-11 23:37:09,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:09,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245808969] [2020-11-11 23:37:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:09,638 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 23:37:09,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245808969] [2020-11-11 23:37:09,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:09,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:37:09,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151047851] [2020-11-11 23:37:09,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:37:09,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:09,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:37:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:37:09,641 INFO L87 Difference]: Start difference. First operand 230 states and 626 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 23:37:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:09,718 INFO L93 Difference]: Finished difference Result 300 states and 791 transitions. [2020-11-11 23:37:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:37:09,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 23:37:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:09,721 INFO L225 Difference]: With dead ends: 300 [2020-11-11 23:37:09,721 INFO L226 Difference]: Without dead ends: 150 [2020-11-11 23:37:09,722 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-11 23:37:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-11 23:37:09,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-11-11 23:37:09,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.469798657718121) internal successors, (368), 149 states have internal predecessors, (368), 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 23:37:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 368 transitions. [2020-11-11 23:37:09,731 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 368 transitions. Word has length 12 [2020-11-11 23:37:09,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:09,731 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 368 transitions. [2020-11-11 23:37:09,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 23:37:09,732 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 368 transitions. [2020-11-11 23:37:09,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:37:09,733 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:09,733 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:09,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:37:09,734 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:09,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:09,734 INFO L82 PathProgramCache]: Analyzing trace with hash -825504203, now seen corresponding path program 1 times [2020-11-11 23:37:09,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:09,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287210772] [2020-11-11 23:37:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:09,833 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 23:37:09,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287210772] [2020-11-11 23:37:09,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:09,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:37:09,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111456943] [2020-11-11 23:37:09,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:37:09,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:09,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:37:09,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:37:09,837 INFO L87 Difference]: Start difference. First operand 150 states and 368 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 23:37:09,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:09,919 INFO L93 Difference]: Finished difference Result 190 states and 456 transitions. [2020-11-11 23:37:09,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:37:09,920 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 23:37:09,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:09,921 INFO L225 Difference]: With dead ends: 190 [2020-11-11 23:37:09,921 INFO L226 Difference]: Without dead ends: 74 [2020-11-11 23:37:09,921 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:37:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-11 23:37:09,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-11 23:37:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 73 states have internal predecessors, (164), 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 23:37:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2020-11-11 23:37:09,928 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 13 [2020-11-11 23:37:09,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:09,928 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2020-11-11 23:37:09,929 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 23:37:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2020-11-11 23:37:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:37:09,932 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:09,932 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:09,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:37:09,932 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:09,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1723208835, now seen corresponding path program 1 times [2020-11-11 23:37:09,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:09,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260821653] [2020-11-11 23:37:09,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:10,097 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 23:37:10,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260821653] [2020-11-11 23:37:10,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:10,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:37:10,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810992115] [2020-11-11 23:37:10,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:37:10,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:10,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:37:10,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:37:10,103 INFO L87 Difference]: Start difference. First operand 74 states and 164 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 23:37:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:10,241 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2020-11-11 23:37:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:37:10,243 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 23:37:10,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:10,244 INFO L225 Difference]: With dead ends: 62 [2020-11-11 23:37:10,244 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:37:10,245 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-11 23:37:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:37:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:37:10,246 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 23:37:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:37:10,247 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-11 23:37:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:10,247 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:37:10,247 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 23:37:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:37:10,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:37:10,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:37:10,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:37:10 BasicIcfg [2020-11-11 23:37:10,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:37:10,255 INFO L168 Benchmark]: Toolchain (without parser) took 7952.07 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 276.8 MB in the beginning and 325.6 MB in the end (delta: -48.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.0 GB. [2020-11-11 23:37:10,261 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:37:10,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.62 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 244.6 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-11 23:37:10,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.67 ms. Allocated memory is still 302.0 MB. Free memory was 244.6 MB in the beginning and 242.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:37:10,264 INFO L168 Benchmark]: Boogie Preprocessor took 29.53 ms. Allocated memory is still 302.0 MB. Free memory was 242.5 MB in the beginning and 241.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:37:10,264 INFO L168 Benchmark]: RCFGBuilder took 696.96 ms. Allocated memory is still 302.0 MB. Free memory was 241.2 MB in the beginning and 262.5 MB in the end (delta: -21.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-11 23:37:10,265 INFO L168 Benchmark]: TraceAbstraction took 6479.79 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 262.5 MB in the beginning and 325.6 MB in the end (delta: -63.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:37:10,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 677.62 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 244.6 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.67 ms. Allocated memory is still 302.0 MB. Free memory was 244.6 MB in the beginning and 242.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.53 ms. Allocated memory is still 302.0 MB. Free memory was 242.5 MB in the beginning and 241.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 696.96 ms. Allocated memory is still 302.0 MB. Free memory was 241.2 MB in the beginning and 262.5 MB in the end (delta: -21.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6479.79 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 262.5 MB in the beginning and 325.6 MB in the end (delta: -63.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 993 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 73 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2870 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 142 SDtfs, 165 SDslu, 218 SDs, 0 SdLazy, 110 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 2995 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...