/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 15:51:01,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 15:51:01,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 15:51:01,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 15:51:01,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 15:51:01,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 15:51:01,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 15:51:01,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 15:51:01,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 15:51:01,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 15:51:01,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 15:51:01,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 15:51:01,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 15:51:01,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 15:51:01,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 15:51:01,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 15:51:01,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 15:51:01,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 15:51:01,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 15:51:01,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 15:51:01,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 15:51:01,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 15:51:01,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 15:51:01,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 15:51:01,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-16 15:51:01,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-16 15:51:01,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-16 15:51:01,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-16 15:51:01,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-16 15:51:01,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-16 15:51:01,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-16 15:51:01,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-16 15:51:01,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-16 15:51:01,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-16 15:51:01,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-16 15:51:01,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-16 15:51:01,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-16 15:51:01,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-16 15:51:01,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 15:51:01,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 15:51:01,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 15:51:01,684 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-NoLbe-Delay.epf [2021-06-16 15:51:01,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 15:51:01,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 15:51:01,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 15:51:01,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 15:51:01,719 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 15:51:01,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 15:51:01,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 15:51:01,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 15:51:01,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 15:51:01,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 15:51:01,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 15:51:01,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 15:51:01,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 15:51:01,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 15:51:01,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 15:51:01,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 15:51:01,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 15:51:01,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 15:51:01,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 15:51:01,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 15:51:01,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 15:51:01,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 15:51:01,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 15:51:01,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 15:51:01,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 15:51:01,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 15:51:01,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 15:51:01,723 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 15:51:01,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 15:51:01,723 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 15:51:01,723 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 15:51:02,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 15:51:02,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 15:51:02,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 15:51:02,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-16 15:51:02,064 INFO L275 PluginConnector]: CDTParser initialized [2021-06-16 15:51:02,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2021-06-16 15:51:02,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98747a3df/b3ad3d3a131c490fb51bf2ef9c4ba34b/FLAG7f2dc0359 [2021-06-16 15:51:02,634 INFO L306 CDTParser]: Found 1 translation units. [2021-06-16 15:51:02,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2021-06-16 15:51:02,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98747a3df/b3ad3d3a131c490fb51bf2ef9c4ba34b/FLAG7f2dc0359 [2021-06-16 15:51:03,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98747a3df/b3ad3d3a131c490fb51bf2ef9c4ba34b [2021-06-16 15:51:03,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 15:51:03,102 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-16 15:51:03,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-16 15:51:03,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-16 15:51:03,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-16 15:51:03,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6857f078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03, skipping insertion in model container [2021-06-16 15:51:03,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-16 15:51:03,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-16 15:51:03,280 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i[949,962] [2021-06-16 15:51:03,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:51:03,446 INFO L203 MainTranslator]: Completed pre-run [2021-06-16 15:51:03,474 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i[949,962] [2021-06-16 15:51:03,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:51:03,612 INFO L208 MainTranslator]: Completed translation [2021-06-16 15:51:03,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03 WrapperNode [2021-06-16 15:51:03,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-16 15:51:03,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 15:51:03,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 15:51:03,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 15:51:03,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 15:51:03,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 15:51:03,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 15:51:03,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 15:51:03,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (1/1) ... [2021-06-16 15:51:03,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 15:51:03,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 15:51:03,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 15:51:03,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 15:51:03,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (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 [2021-06-16 15:51:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-16 15:51:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-16 15:51:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-16 15:51:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-16 15:51:03,912 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-16 15:51:03,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-16 15:51:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-16 15:51:03,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-16 15:51:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-16 15:51:03,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-16 15:51:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-16 15:51:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-16 15:51:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 15:51:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 15:51:03,915 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 15:51:04,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 15:51:04,425 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-16 15:51:04,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:51:04 BoogieIcfgContainer [2021-06-16 15:51:04,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 15:51:04,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 15:51:04,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 15:51:04,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 15:51:04,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.06 03:51:03" (1/3) ... [2021-06-16 15:51:04,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc94745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:51:04, skipping insertion in model container [2021-06-16 15:51:04,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:51:03" (2/3) ... [2021-06-16 15:51:04,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc94745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:51:04, skipping insertion in model container [2021-06-16 15:51:04,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:51:04" (3/3) ... [2021-06-16 15:51:04,435 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_rmo.opt.i [2021-06-16 15:51:04,440 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 15:51:04,441 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 15:51:04,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 15:51:04,441 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 15:51:04,475 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,476 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,476 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,476 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,476 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,477 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,478 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,478 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,478 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,479 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,480 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,480 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,486 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,486 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,487 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,487 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,490 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,490 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,490 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,490 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,495 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,495 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,496 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,496 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,498 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,498 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:51:04,503 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-16 15:51:04,522 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-16 15:51:04,548 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 15:51:04,549 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 15:51:04,549 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 15:51:04,549 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 15:51:04,549 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 15:51:04,549 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 15:51:04,549 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 15:51:04,549 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 15:51:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 9333 states, 8011 states have (on average 2.1088503307951565) internal successors, (16894), 9332 states have internal predecessors, (16894), 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) [2021-06-16 15:51:05,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-16 15:51:05,420 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:51:05,420 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:51:05,421 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:51:05,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:51:05,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1743011939, now seen corresponding path program 1 times [2021-06-16 15:51:05,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:51:05,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45187427] [2021-06-16 15:51:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:51:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:51:05,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:05,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:05,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:05,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:05,790 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:51:05,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:51:05,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:05,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:51:05,820 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:51:05,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:05,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:05,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:51:05,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:51:05,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45187427] [2021-06-16 15:51:05,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45187427] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:51:05,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:51:05,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:51:05,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498102712] [2021-06-16 15:51:05,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:51:05,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:51:05,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:51:05,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:51:05,882 INFO L87 Difference]: Start difference. First operand has 9333 states, 8011 states have (on average 2.1088503307951565) internal successors, (16894), 9332 states have internal predecessors, (16894), 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 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-06-16 15:51:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:51:06,157 INFO L93 Difference]: Finished difference Result 9297 states and 15708 transitions. [2021-06-16 15:51:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 15:51:06,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 50 [2021-06-16 15:51:06,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:51:06,196 INFO L225 Difference]: With dead ends: 9297 [2021-06-16 15:51:06,196 INFO L226 Difference]: Without dead ends: 2559 [2021-06-16 15:51:06,198 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:51:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2021-06-16 15:51:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2559. [2021-06-16 15:51:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2510 states have (on average 2.0159362549800797) internal successors, (5060), 2558 states have internal predecessors, (5060), 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) [2021-06-16 15:51:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 5060 transitions. [2021-06-16 15:51:06,343 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 5060 transitions. Word has length 50 [2021-06-16 15:51:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:51:06,343 INFO L482 AbstractCegarLoop]: Abstraction has 2559 states and 5060 transitions. [2021-06-16 15:51:06,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-06-16 15:51:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 5060 transitions. [2021-06-16 15:51:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-16 15:51:06,350 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:51:06,350 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:51:06,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 15:51:06,350 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:51:06,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:51:06,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2134634277, now seen corresponding path program 1 times [2021-06-16 15:51:06,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:51:06,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519274112] [2021-06-16 15:51:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:51:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:51:06,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:06,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:06,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:06,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:06,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:06,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:06,485 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:51:06,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:51:06,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:06,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:51:06,512 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:51:06,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:06,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:06,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:51:06,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:51:06,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519274112] [2021-06-16 15:51:06,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519274112] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:51:06,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:51:06,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:51:06,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799566567] [2021-06-16 15:51:06,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:51:06,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:51:06,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:51:06,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:51:06,526 INFO L87 Difference]: Start difference. First operand 2559 states and 5060 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-06-16 15:51:06,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:51:06,692 INFO L93 Difference]: Finished difference Result 2019 states and 3784 transitions. [2021-06-16 15:51:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 15:51:06,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-06-16 15:51:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:51:06,698 INFO L225 Difference]: With dead ends: 2019 [2021-06-16 15:51:06,698 INFO L226 Difference]: Without dead ends: 1265 [2021-06-16 15:51:06,700 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-16 15:51:06,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2021-06-16 15:51:06,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1265. [2021-06-16 15:51:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1232 states have (on average 1.8863636363636365) internal successors, (2324), 1264 states have internal predecessors, (2324), 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) [2021-06-16 15:51:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 2324 transitions. [2021-06-16 15:51:06,745 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 2324 transitions. Word has length 54 [2021-06-16 15:51:06,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:51:06,746 INFO L482 AbstractCegarLoop]: Abstraction has 1265 states and 2324 transitions. [2021-06-16 15:51:06,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-06-16 15:51:06,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 2324 transitions. [2021-06-16 15:51:06,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-16 15:51:06,750 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:51:06,750 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:51:06,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 15:51:06,750 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:51:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:51:06,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1884178791, now seen corresponding path program 1 times [2021-06-16 15:51:06,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:51:06,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593618779] [2021-06-16 15:51:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:51:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:51:06,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:06,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:06,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:06,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:06,817 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 15:51:06,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 15:51:06,828 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:51:06,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:51:06,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:06,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:06,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:06,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:06,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:06,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:51:06,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:51:06,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593618779] [2021-06-16 15:51:06,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593618779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:51:06,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:51:06,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:51:06,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309429356] [2021-06-16 15:51:06,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:51:06,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:51:06,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:51:06,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:51:06,878 INFO L87 Difference]: Start difference. First operand 1265 states and 2324 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-16 15:51:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:51:07,052 INFO L93 Difference]: Finished difference Result 1837 states and 3625 transitions. [2021-06-16 15:51:07,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 15:51:07,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-06-16 15:51:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:51:07,066 INFO L225 Difference]: With dead ends: 1837 [2021-06-16 15:51:07,066 INFO L226 Difference]: Without dead ends: 1290 [2021-06-16 15:51:07,067 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 155.9ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-16 15:51:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-06-16 15:51:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1160. [2021-06-16 15:51:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1127 states have (on average 1.881100266193434) internal successors, (2120), 1159 states have internal predecessors, (2120), 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) [2021-06-16 15:51:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 2120 transitions. [2021-06-16 15:51:07,095 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 2120 transitions. Word has length 58 [2021-06-16 15:51:07,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:51:07,097 INFO L482 AbstractCegarLoop]: Abstraction has 1160 states and 2120 transitions. [2021-06-16 15:51:07,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-16 15:51:07,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 2120 transitions. [2021-06-16 15:51:07,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-16 15:51:07,100 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:51:07,100 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:51:07,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 15:51:07,100 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:51:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:51:07,102 INFO L82 PathProgramCache]: Analyzing trace with hash -453269411, now seen corresponding path program 1 times [2021-06-16 15:51:07,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:51:07,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146865968] [2021-06-16 15:51:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:51:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:51:07,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:07,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:07,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:07,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:07,205 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:51:07,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:51:07,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:51:07,236 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:51:07,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:07,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:51:07,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:51:07,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146865968] [2021-06-16 15:51:07,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146865968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:51:07,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:51:07,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:51:07,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825271602] [2021-06-16 15:51:07,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:51:07,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:51:07,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:51:07,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:51:07,251 INFO L87 Difference]: Start difference. First operand 1160 states and 2120 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-06-16 15:51:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:51:07,433 INFO L93 Difference]: Finished difference Result 740 states and 1197 transitions. [2021-06-16 15:51:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 15:51:07,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 58 [2021-06-16 15:51:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:51:07,435 INFO L225 Difference]: With dead ends: 740 [2021-06-16 15:51:07,435 INFO L226 Difference]: Without dead ends: 371 [2021-06-16 15:51:07,436 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:51:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-06-16 15:51:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 360. [2021-06-16 15:51:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 351 states have (on average 1.5299145299145298) internal successors, (537), 359 states have internal predecessors, (537), 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) [2021-06-16 15:51:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 537 transitions. [2021-06-16 15:51:07,443 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 537 transitions. Word has length 58 [2021-06-16 15:51:07,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:51:07,443 INFO L482 AbstractCegarLoop]: Abstraction has 360 states and 537 transitions. [2021-06-16 15:51:07,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-06-16 15:51:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 537 transitions. [2021-06-16 15:51:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-16 15:51:07,444 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:51:07,445 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:51:07,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 15:51:07,445 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:51:07,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:51:07,445 INFO L82 PathProgramCache]: Analyzing trace with hash -599416845, now seen corresponding path program 1 times [2021-06-16 15:51:07,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:51:07,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575069753] [2021-06-16 15:51:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:51:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:51:07,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:07,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:07,534 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 15:51:07,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 15:51:07,546 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:51:07,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:51:07,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:07,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:07,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:51:07,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:51:07,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575069753] [2021-06-16 15:51:07,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575069753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:51:07,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:51:07,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:51:07,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057598364] [2021-06-16 15:51:07,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:51:07,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:51:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:51:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:51:07,594 INFO L87 Difference]: Start difference. First operand 360 states and 537 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-06-16 15:51:07,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:51:07,709 INFO L93 Difference]: Finished difference Result 474 states and 773 transitions. [2021-06-16 15:51:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 15:51:07,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-06-16 15:51:07,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:51:07,711 INFO L225 Difference]: With dead ends: 474 [2021-06-16 15:51:07,711 INFO L226 Difference]: Without dead ends: 266 [2021-06-16 15:51:07,712 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 131.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:51:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-06-16 15:51:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 258. [2021-06-16 15:51:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 249 states have (on average 1.6586345381526104) internal successors, (413), 257 states have internal predecessors, (413), 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) [2021-06-16 15:51:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 413 transitions. [2021-06-16 15:51:07,717 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 413 transitions. Word has length 62 [2021-06-16 15:51:07,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:51:07,717 INFO L482 AbstractCegarLoop]: Abstraction has 258 states and 413 transitions. [2021-06-16 15:51:07,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-06-16 15:51:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 413 transitions. [2021-06-16 15:51:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-16 15:51:07,719 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:51:07,719 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:51:07,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 15:51:07,720 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:51:07,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:51:07,720 INFO L82 PathProgramCache]: Analyzing trace with hash 317441563, now seen corresponding path program 2 times [2021-06-16 15:51:07,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:51:07,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718711102] [2021-06-16 15:51:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:51:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:51:07,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:07,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:07,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:07,815 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:51:07,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:51:07,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:07,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:07,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:51:07,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:51:07,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718711102] [2021-06-16 15:51:07,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718711102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:51:07,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:51:07,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:51:07,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378474348] [2021-06-16 15:51:07,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:51:07,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:51:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:51:07,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:51:07,864 INFO L87 Difference]: Start difference. First operand 258 states and 413 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-06-16 15:51:07,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:51:07,935 INFO L93 Difference]: Finished difference Result 380 states and 657 transitions. [2021-06-16 15:51:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 15:51:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-06-16 15:51:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:51:07,938 INFO L225 Difference]: With dead ends: 380 [2021-06-16 15:51:07,938 INFO L226 Difference]: Without dead ends: 248 [2021-06-16 15:51:07,939 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:51:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-06-16 15:51:07,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-06-16 15:51:07,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 239 states have (on average 1.6778242677824269) internal successors, (401), 247 states have internal predecessors, (401), 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) [2021-06-16 15:51:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 401 transitions. [2021-06-16 15:51:07,944 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 401 transitions. Word has length 62 [2021-06-16 15:51:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:51:07,944 INFO L482 AbstractCegarLoop]: Abstraction has 248 states and 401 transitions. [2021-06-16 15:51:07,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-06-16 15:51:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 401 transitions. [2021-06-16 15:51:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-16 15:51:07,945 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:51:07,945 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:51:07,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 15:51:07,946 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:51:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:51:07,946 INFO L82 PathProgramCache]: Analyzing trace with hash 356303807, now seen corresponding path program 3 times [2021-06-16 15:51:07,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:51:07,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243942499] [2021-06-16 15:51:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:51:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:51:07,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:07,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:07,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:07,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:08,003 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:51:08,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:51:08,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:08,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:08,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:08,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:08,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:08,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:51:08,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:51:08,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243942499] [2021-06-16 15:51:08,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243942499] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:51:08,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:51:08,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:51:08,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568763306] [2021-06-16 15:51:08,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:51:08,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:51:08,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:51:08,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:51:08,048 INFO L87 Difference]: Start difference. First operand 248 states and 401 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-06-16 15:51:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:51:08,120 INFO L93 Difference]: Finished difference Result 358 states and 627 transitions. [2021-06-16 15:51:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 15:51:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-06-16 15:51:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:51:08,121 INFO L225 Difference]: With dead ends: 358 [2021-06-16 15:51:08,122 INFO L226 Difference]: Without dead ends: 214 [2021-06-16 15:51:08,122 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:51:08,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-06-16 15:51:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-06-16 15:51:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 205 states have (on average 1.7560975609756098) internal successors, (360), 213 states have internal predecessors, (360), 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) [2021-06-16 15:51:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 360 transitions. [2021-06-16 15:51:08,127 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 360 transitions. Word has length 62 [2021-06-16 15:51:08,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:51:08,128 INFO L482 AbstractCegarLoop]: Abstraction has 214 states and 360 transitions. [2021-06-16 15:51:08,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-06-16 15:51:08,128 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 360 transitions. [2021-06-16 15:51:08,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-16 15:51:08,129 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:51:08,129 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:51:08,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-16 15:51:08,129 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:51:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:51:08,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1191055837, now seen corresponding path program 4 times [2021-06-16 15:51:08,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:51:08,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226535235] [2021-06-16 15:51:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:51:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:51:08,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:08,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:08,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:08,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:51:08,192 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 15:51:08,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 15:51:08,205 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:51:08,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:51:08,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:08,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:08,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:08,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:51:08,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:51:08,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:51:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:51:08,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:51:08,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226535235] [2021-06-16 15:51:08,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226535235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:51:08,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:51:08,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:51:08,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733296626] [2021-06-16 15:51:08,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:51:08,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:51:08,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:51:08,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:51:08,246 INFO L87 Difference]: Start difference. First operand 214 states and 360 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-06-16 15:51:08,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:51:08,328 INFO L93 Difference]: Finished difference Result 178 states and 300 transitions. [2021-06-16 15:51:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 15:51:08,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-06-16 15:51:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:51:08,329 INFO L225 Difference]: With dead ends: 178 [2021-06-16 15:51:08,329 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 15:51:08,329 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:51:08,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 15:51:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 15:51:08,330 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) [2021-06-16 15:51:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 15:51:08,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-06-16 15:51:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:51:08,330 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 15:51:08,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-06-16 15:51:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 15:51:08,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 15:51:08,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-16 15:51:08,332 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 15:51:08,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 03:51:08 BasicIcfg [2021-06-16 15:51:08,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 15:51:08,336 INFO L168 Benchmark]: Toolchain (without parser) took 5232.56 ms. Allocated memory was 178.3 MB in the beginning and 340.8 MB in the end (delta: 162.5 MB). Free memory was 140.5 MB in the beginning and 289.8 MB in the end (delta: -149.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2021-06-16 15:51:08,337 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 178.3 MB. Free memory is still 158.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 15:51:08,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 509.20 ms. Allocated memory is still 178.3 MB. Free memory was 140.4 MB in the beginning and 141.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-06-16 15:51:08,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.64 ms. Allocated memory is still 178.3 MB. Free memory was 141.9 MB in the beginning and 139.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:51:08,342 INFO L168 Benchmark]: Boogie Preprocessor took 49.13 ms. Allocated memory is still 178.3 MB. Free memory was 139.8 MB in the beginning and 138.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 15:51:08,343 INFO L168 Benchmark]: RCFGBuilder took 650.34 ms. Allocated memory is still 178.3 MB. Free memory was 138.2 MB in the beginning and 114.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:51:08,343 INFO L168 Benchmark]: TraceAbstraction took 3905.20 ms. Allocated memory was 178.3 MB in the beginning and 340.8 MB in the end (delta: 162.5 MB). Free memory was 114.6 MB in the beginning and 289.8 MB in the end (delta: -175.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 15:51:08,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 178.3 MB. Free memory is still 158.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 509.20 ms. Allocated memory is still 178.3 MB. Free memory was 140.4 MB in the beginning and 141.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 98.64 ms. Allocated memory is still 178.3 MB. Free memory was 141.9 MB in the beginning and 139.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.13 ms. Allocated memory is still 178.3 MB. Free memory was 139.8 MB in the beginning and 138.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 650.34 ms. Allocated memory is still 178.3 MB. Free memory was 138.2 MB in the beginning and 114.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3905.20 ms. Allocated memory was 178.3 MB in the beginning and 340.8 MB in the end (delta: 162.5 MB). Free memory was 114.6 MB in the beginning and 289.8 MB in the end (delta: -175.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 32449, positive: 31385, positive conditional: 31385, positive unconditional: 0, negative: 1064, negative conditional: 1064, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 32012, positive: 31385, positive conditional: 0, positive unconditional: 31385, negative: 627, negative conditional: 0, negative unconditional: 627, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 943, positive: 930, positive conditional: 0, positive unconditional: 930, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 943, positive: 926, positive conditional: 0, positive unconditional: 926, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 32012, positive: 30455, positive conditional: 0, positive unconditional: 30455, negative: 614, negative conditional: 0, negative unconditional: 614, unknown: 943, unknown conditional: 0, unknown unconditional: 943] , Statistics on independence cache: Total cache size (in pairs): 943, Positive cache size: 930, Positive conditional cache size: 0, Positive unconditional cache size: 930, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Independence queries for same thread: 437 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3784.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 69.8ms, AutomataDifference: 1253.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 814.2ms, PartialOrderReductionTime: 795.1ms, HoareTripleCheckerStatistics: 726 SDtfs, 828 SDslu, 2705 SDs, 0 SdLazy, 303 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 231.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 975.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9333occurred in iteration=0, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 228.8ms AutomataMinimizationTime, 8 MinimizatonAttempts, 149 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.1ms SsaConstructionTime, 240.4ms SatisfiabilityAnalysisTime, 926.9ms InterpolantComputationTime, 468 NumberOfCodeBlocks, 468 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 460 ConstructedInterpolants, 0 QuantifiedInterpolants, 1334 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...