/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:50:37,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:50:37,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:50:37,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:50:37,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:50:37,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:50:37,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:50:37,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:50:37,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:50:37,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:50:37,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:50:37,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:50:37,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:50:37,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:50:37,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:50:37,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:50:37,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:50:37,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:50:37,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:50:37,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:50:37,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:50:37,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:50:37,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:50:37,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:50:37,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 23:50:37,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 23:50:37,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 23:50:37,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 23:50:37,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 23:50:37,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 23:50:37,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:50:37,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:50:37,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:50:37,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:50:37,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:50:37,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:50:37,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:50:37,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:50:37,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:50:37,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:50:37,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:50:37,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-11-11 23:50:37,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:50:37,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:50:37,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:50:37,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:50:37,361 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:50:37,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:50:37,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:50:37,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:50:37,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:50:37,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:50:37,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:50:37,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:50:37,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:50:37,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:50:37,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:50:37,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:50:37,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:50:37,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:50:37,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:50:37,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:50:37,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:50:37,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:50:37,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:50:37,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:50:37,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:50:37,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:50:37,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:50:37,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:50:37,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:50:37,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:50:37,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:50:37,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:50:37,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:50:37,765 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:50:37,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-11-11 23:50:37,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d6b161b/b64fb494754d40458c8e5061484eed3a/FLAGd749608dd [2020-11-11 23:50:38,737 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:50:38,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-11-11 23:50:38,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d6b161b/b64fb494754d40458c8e5061484eed3a/FLAGd749608dd [2020-11-11 23:50:38,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d6b161b/b64fb494754d40458c8e5061484eed3a [2020-11-11 23:50:38,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:50:38,967 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:50:38,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:50:38,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:50:38,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:50:38,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:50:38" (1/1) ... [2020-11-11 23:50:38,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425f2b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:38, skipping insertion in model container [2020-11-11 23:50:38,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:50:38" (1/1) ... [2020-11-11 23:50:38,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:50:39,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:50:39,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:50:39,472 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:50:39,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:50:39,677 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:50:39,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39 WrapperNode [2020-11-11 23:50:39,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:50:39,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:50:39,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:50:39,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:50:39,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (1/1) ... [2020-11-11 23:50:39,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (1/1) ... [2020-11-11 23:50:39,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:50:39,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:50:39,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:50:39,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:50:39,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (1/1) ... [2020-11-11 23:50:39,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (1/1) ... [2020-11-11 23:50:39,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (1/1) ... [2020-11-11 23:50:39,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (1/1) ... [2020-11-11 23:50:39,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (1/1) ... [2020-11-11 23:50:39,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (1/1) ... [2020-11-11 23:50:39,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (1/1) ... [2020-11-11 23:50:39,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:50:39,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:50:39,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:50:39,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:50:39,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:50:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:50:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:50:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:50:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:50:39,861 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:50:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:50:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:50:39,864 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:50:39,866 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:50:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:50:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:50:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:50:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:50:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:50:39,871 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 23:50:40,470 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:50:40,470 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:50:40,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:50:40 BoogieIcfgContainer [2020-11-11 23:50:40,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:50:40,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:50:40,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:50:40,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:50:40,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:50:38" (1/3) ... [2020-11-11 23:50:40,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dee157c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:50:40, skipping insertion in model container [2020-11-11 23:50:40,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:50:39" (2/3) ... [2020-11-11 23:50:40,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dee157c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:50:40, skipping insertion in model container [2020-11-11 23:50:40,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:50:40" (3/3) ... [2020-11-11 23:50:40,484 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-11-11 23:50:40,510 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:50:40,510 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:50:40,514 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:50:40,515 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:50:40,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,565 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,566 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,585 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,586 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,591 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,592 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,595 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,596 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,596 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,596 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:50:40,599 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:50:40,613 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:50:40,639 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:50:40,640 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:50:40,640 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:50:40,640 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:50:40,640 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:50:40,640 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:50:40,640 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:50:40,641 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:50:40,653 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:50:40,655 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-11 23:50:40,658 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-11 23:50:40,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-11 23:50:40,705 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-11 23:50:40,705 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:50:40,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-11 23:50:40,713 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-11 23:50:41,503 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-11 23:50:43,941 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-11 23:50:44,184 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-11 23:50:44,809 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-11 23:50:44,915 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-11 23:50:45,148 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-11 23:50:45,259 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-11 23:50:45,525 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-11-11 23:50:45,603 INFO L131 LiptonReduction]: Checked pairs total: 3059 [2020-11-11 23:50:45,604 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-11 23:50:45,610 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-11 23:50:45,639 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:50:45,651 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:50:45,651 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:50:45,652 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:50:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:50:45,658 INFO L82 PathProgramCache]: Analyzing trace with hash -2122544444, now seen corresponding path program 1 times [2020-11-11 23:50:45,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:50:45,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331167589] [2020-11-11 23:50:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:50:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:50:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:50:45,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331167589] [2020-11-11 23:50:45,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:50:45,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:50:45,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046238244] [2020-11-11 23:50:45,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:50:45,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:50:45,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:50:45,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:50:45,963 INFO L87 Difference]: Start difference. First operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:50:46,019 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-11-11 23:50:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:50:46,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2020-11-11 23:50:46,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:50:46,044 INFO L225 Difference]: With dead ends: 290 [2020-11-11 23:50:46,045 INFO L226 Difference]: Without dead ends: 226 [2020-11-11 23:50:46,052 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:50:46,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-11 23:50:46,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-11 23:50:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.7822222222222224) internal successors, (626), 225 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-11-11 23:50:46,131 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-11-11 23:50:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:50:46,133 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-11-11 23:50:46,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-11-11 23:50:46,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:50:46,134 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:50:46,135 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:50:46,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:50:46,135 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:50:46,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:50:46,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1390600628, now seen corresponding path program 1 times [2020-11-11 23:50:46,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:50:46,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998326529] [2020-11-11 23:50:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:50:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:50:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:50:46,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998326529] [2020-11-11 23:50:46,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:50:46,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:50:46,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293946805] [2020-11-11 23:50:46,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:50:46,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:50:46,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:50:46,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:50:46,243 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:50:46,277 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-11-11 23:50:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:50:46,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2020-11-11 23:50:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:50:46,285 INFO L225 Difference]: With dead ends: 220 [2020-11-11 23:50:46,285 INFO L226 Difference]: Without dead ends: 220 [2020-11-11 23:50:46,286 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:50:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-11 23:50:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-11-11 23:50:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.7579908675799087) internal successors, (604), 219 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-11-11 23:50:46,334 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-11-11 23:50:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:50:46,335 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-11-11 23:50:46,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,337 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-11-11 23:50:46,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-11 23:50:46,339 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:50:46,339 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:50:46,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:50:46,339 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:50:46,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:50:46,343 INFO L82 PathProgramCache]: Analyzing trace with hash 134194710, now seen corresponding path program 1 times [2020-11-11 23:50:46,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:50:46,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893047218] [2020-11-11 23:50:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:50:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:50:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:50:46,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893047218] [2020-11-11 23:50:46,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:50:46,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:50:46,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827030017] [2020-11-11 23:50:46,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:50:46,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:50:46,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:50:46,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:50:46,451 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:50:46,492 INFO L93 Difference]: Finished difference Result 296 states and 766 transitions. [2020-11-11 23:50:46,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:50:46,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2020-11-11 23:50:46,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:50:46,496 INFO L225 Difference]: With dead ends: 296 [2020-11-11 23:50:46,496 INFO L226 Difference]: Without dead ends: 236 [2020-11-11 23:50:46,496 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:50:46,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-11-11 23:50:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2020-11-11 23:50:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.5971563981042656) internal successors, (548), 211 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 548 transitions. [2020-11-11 23:50:46,533 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 548 transitions. Word has length 10 [2020-11-11 23:50:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:50:46,533 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 548 transitions. [2020-11-11 23:50:46,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 548 transitions. [2020-11-11 23:50:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-11 23:50:46,539 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:50:46,539 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:50:46,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:50:46,539 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:50:46,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:50:46,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1556074820, now seen corresponding path program 1 times [2020-11-11 23:50:46,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:50:46,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190670956] [2020-11-11 23:50:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:50:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:50:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:50:46,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190670956] [2020-11-11 23:50:46,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:50:46,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:50:46,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826044468] [2020-11-11 23:50:46,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:50:46,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:50:46,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:50:46,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:50:46,605 INFO L87 Difference]: Start difference. First operand 212 states and 548 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:50:46,612 INFO L93 Difference]: Finished difference Result 203 states and 518 transitions. [2020-11-11 23:50:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:50:46,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2020-11-11 23:50:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:50:46,615 INFO L225 Difference]: With dead ends: 203 [2020-11-11 23:50:46,615 INFO L226 Difference]: Without dead ends: 203 [2020-11-11 23:50:46,615 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:50:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-11 23:50:46,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-11-11 23:50:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 2.5643564356435644) internal successors, (518), 202 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 518 transitions. [2020-11-11 23:50:46,628 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 518 transitions. Word has length 10 [2020-11-11 23:50:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:50:46,628 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 518 transitions. [2020-11-11 23:50:46,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 518 transitions. [2020-11-11 23:50:46,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:50:46,631 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:50:46,631 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:50:46,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:50:46,631 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:50:46,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:50:46,632 INFO L82 PathProgramCache]: Analyzing trace with hash 993678181, now seen corresponding path program 1 times [2020-11-11 23:50:46,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:50:46,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013032136] [2020-11-11 23:50:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:50:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:50:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:50:46,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013032136] [2020-11-11 23:50:46,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:50:46,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:50:46,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841643398] [2020-11-11 23:50:46,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:50:46,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:50:46,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:50:46,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:50:46,729 INFO L87 Difference]: Start difference. First operand 203 states and 518 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:50:46,766 INFO L93 Difference]: Finished difference Result 240 states and 585 transitions. [2020-11-11 23:50:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:50:46,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2020-11-11 23:50:46,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:50:46,768 INFO L225 Difference]: With dead ends: 240 [2020-11-11 23:50:46,769 INFO L226 Difference]: Without dead ends: 144 [2020-11-11 23:50:46,769 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:50:46,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-11 23:50:46,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-11 23:50:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.3146853146853146) internal successors, (331), 143 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 331 transitions. [2020-11-11 23:50:46,783 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 331 transitions. Word has length 11 [2020-11-11 23:50:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:50:46,783 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 331 transitions. [2020-11-11 23:50:46,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 331 transitions. [2020-11-11 23:50:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:50:46,788 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:50:46,788 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:50:46,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:50:46,789 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:50:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:50:46,791 INFO L82 PathProgramCache]: Analyzing trace with hash 739210233, now seen corresponding path program 1 times [2020-11-11 23:50:46,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:50:46,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745453906] [2020-11-11 23:50:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:50:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:50:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:50:46,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745453906] [2020-11-11 23:50:46,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:50:46,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:50:46,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348590615] [2020-11-11 23:50:46,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:50:46,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:50:46,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:50:46,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:50:46,906 INFO L87 Difference]: Start difference. First operand 144 states and 331 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:50:46,959 INFO L93 Difference]: Finished difference Result 164 states and 345 transitions. [2020-11-11 23:50:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:50:46,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2020-11-11 23:50:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:50:46,961 INFO L225 Difference]: With dead ends: 164 [2020-11-11 23:50:46,961 INFO L226 Difference]: Without dead ends: 124 [2020-11-11 23:50:46,962 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:50:46,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-11 23:50:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-11 23:50:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.1219512195121952) internal successors, (261), 123 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 261 transitions. [2020-11-11 23:50:46,967 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 261 transitions. Word has length 12 [2020-11-11 23:50:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:50:46,967 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 261 transitions. [2020-11-11 23:50:46,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 261 transitions. [2020-11-11 23:50:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:50:46,971 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:50:46,971 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:50:46,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:50:46,971 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:50:46,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:50:46,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1374989644, now seen corresponding path program 1 times [2020-11-11 23:50:46,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:50:46,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950811239] [2020-11-11 23:50:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:50:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:50:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:50:47,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950811239] [2020-11-11 23:50:47,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:50:47,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:50:47,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944860147] [2020-11-11 23:50:47,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:50:47,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:50:47,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:50:47,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:50:47,066 INFO L87 Difference]: Start difference. First operand 124 states and 261 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:50:47,128 INFO L93 Difference]: Finished difference Result 122 states and 237 transitions. [2020-11-11 23:50:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:50:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-11 23:50:47,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:50:47,129 INFO L225 Difference]: With dead ends: 122 [2020-11-11 23:50:47,129 INFO L226 Difference]: Without dead ends: 97 [2020-11-11 23:50:47,130 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:50:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-11 23:50:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-11 23:50:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.9375) internal successors, (186), 96 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:47,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 186 transitions. [2020-11-11 23:50:47,134 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 186 transitions. Word has length 13 [2020-11-11 23:50:47,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:50:47,134 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 186 transitions. [2020-11-11 23:50:47,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 186 transitions. [2020-11-11 23:50:47,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:50:47,135 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:50:47,135 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:50:47,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:50:47,136 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:50:47,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:50:47,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2052609085, now seen corresponding path program 1 times [2020-11-11 23:50:47,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:50:47,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497765881] [2020-11-11 23:50:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:50:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:50:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:50:47,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497765881] [2020-11-11 23:50:47,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:50:47,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:50:47,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648512770] [2020-11-11 23:50:47,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:50:47,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:50:47,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:50:47,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:50:47,173 INFO L87 Difference]: Start difference. First operand 97 states and 186 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:47,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:50:47,181 INFO L93 Difference]: Finished difference Result 101 states and 184 transitions. [2020-11-11 23:50:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:50:47,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2020-11-11 23:50:47,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:50:47,182 INFO L225 Difference]: With dead ends: 101 [2020-11-11 23:50:47,182 INFO L226 Difference]: Without dead ends: 73 [2020-11-11 23:50:47,183 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:50:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-11 23:50:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-11-11 23:50:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2020-11-11 23:50:47,186 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 14 [2020-11-11 23:50:47,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:50:47,186 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2020-11-11 23:50:47,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2020-11-11 23:50:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 23:50:47,187 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:50:47,187 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:50:47,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 23:50:47,187 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:50:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:50:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1212324407, now seen corresponding path program 1 times [2020-11-11 23:50:47,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:50:47,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924171630] [2020-11-11 23:50:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:50:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:50:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:50:47,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924171630] [2020-11-11 23:50:47,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:50:47,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:50:47,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041291449] [2020-11-11 23:50:47,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:50:47,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:50:47,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:50:47,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:50:47,241 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:47,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:50:47,269 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-11-11 23:50:47,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:50:47,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2020-11-11 23:50:47,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:50:47,270 INFO L225 Difference]: With dead ends: 67 [2020-11-11 23:50:47,270 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:50:47,271 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:50:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:50:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:50:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:50:47,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-11 23:50:47,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:50:47,272 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:50:47,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:50:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:50:47,272 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:50:47,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 23:50:47,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:50:47 BasicIcfg [2020-11-11 23:50:47,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:50:47,277 INFO L168 Benchmark]: Toolchain (without parser) took 8314.54 ms. Allocated memory was 302.0 MB in the beginning and 381.7 MB in the end (delta: 79.7 MB). Free memory was 275.3 MB in the beginning and 275.5 MB in the end (delta: -168.8 kB). Peak memory consumption was 81.5 MB. Max. memory is 16.0 GB. [2020-11-11 23:50:47,278 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:50:47,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.25 ms. Allocated memory is still 302.0 MB. Free memory was 274.7 MB in the beginning and 244.0 MB in the end (delta: 30.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-11 23:50:47,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.61 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 242.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:50:47,280 INFO L168 Benchmark]: Boogie Preprocessor took 26.60 ms. Allocated memory is still 302.0 MB. Free memory was 242.0 MB in the beginning and 240.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:50:47,280 INFO L168 Benchmark]: RCFGBuilder took 692.48 ms. Allocated memory is still 302.0 MB. Free memory was 240.7 MB in the beginning and 269.4 MB in the end (delta: -28.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.0 GB. [2020-11-11 23:50:47,281 INFO L168 Benchmark]: TraceAbstraction took 6800.23 ms. Allocated memory was 302.0 MB in the beginning and 381.7 MB in the end (delta: 79.7 MB). Free memory was 268.3 MB in the beginning and 275.5 MB in the end (delta: -7.2 MB). Peak memory consumption was 73.6 MB. Max. memory is 16.0 GB. [2020-11-11 23:50:47,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 709.25 ms. Allocated memory is still 302.0 MB. Free memory was 274.7 MB in the beginning and 244.0 MB in the end (delta: 30.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 73.61 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 242.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.60 ms. Allocated memory is still 302.0 MB. Free memory was 242.0 MB in the beginning and 240.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 692.48 ms. Allocated memory is still 302.0 MB. Free memory was 240.7 MB in the beginning and 269.4 MB in the end (delta: -28.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6800.23 ms. Allocated memory was 302.0 MB in the beginning and 381.7 MB in the end (delta: 79.7 MB). Free memory was 268.3 MB in the beginning and 275.5 MB in the end (delta: -7.2 MB). Peak memory consumption was 73.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 982 VarBasedMoverChecksPositive, 52 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.9s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 71 TotalNumberOfCompositions, 3059 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 167 SDtfs, 116 SDslu, 171 SDs, 0 SdLazy, 83 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 3041 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...