/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:27:13,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:27:13,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:27:13,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:27:13,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:27:13,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:27:13,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:27:13,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:27:13,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:27:13,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:27:13,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:27:13,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:27:13,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:27:13,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:27:13,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:27:13,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:27:13,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:27:13,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:27:13,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:27:13,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:27:13,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:27:13,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:27:13,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:27:13,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:27:13,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 11:27:13,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 11:27:13,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 11:27:13,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 11:27:13,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 11:27:13,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 11:27:13,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:27:13,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:27:13,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:27:13,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:27:13,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:27:13,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:27:13,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:27:13,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:27:13,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:27:13,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:27:13,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:27:13,215 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 [2021-03-11 11:27:13,243 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:27:13,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:27:13,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:27:13,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:27:13,245 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:27:13,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:27:13,245 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:27:13,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:27:13,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:27:13,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:27:13,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:27:13,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:27:13,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:27:13,246 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:27:13,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:27:13,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:27:13,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:27:13,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:27:13,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:27:13,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:27:13,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:27:13,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:27:13,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:27:13,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:27:13,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:27:13,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:27:13,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:27:13,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:27:13,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:27:13,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:27:13,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:27:13,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:27:13,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:27:13,541 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:27:13,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-03-11 11:27:13,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4381319e5/dafbbf97c0f14a7e92c845a1b6a932fe/FLAGa4445e459 [2021-03-11 11:27:14,166 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:27:14,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-03-11 11:27:14,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4381319e5/dafbbf97c0f14a7e92c845a1b6a932fe/FLAGa4445e459 [2021-03-11 11:27:14,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4381319e5/dafbbf97c0f14a7e92c845a1b6a932fe [2021-03-11 11:27:14,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:27:14,580 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:27:14,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:27:14,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:27:14,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:27:14,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:27:14" (1/1) ... [2021-03-11 11:27:14,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c08ff98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:14, skipping insertion in model container [2021-03-11 11:27:14,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:27:14" (1/1) ... [2021-03-11 11:27:14,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:27:14,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:27:14,754 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i[949,962] [2021-03-11 11:27:14,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:27:14,877 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:27:14,889 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i[949,962] [2021-03-11 11:27:14,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:27:15,004 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:27:15,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15 WrapperNode [2021-03-11 11:27:15,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:27:15,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:27:15,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:27:15,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:27:15,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (1/1) ... [2021-03-11 11:27:15,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (1/1) ... [2021-03-11 11:27:15,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:27:15,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:27:15,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:27:15,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:27:15,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (1/1) ... [2021-03-11 11:27:15,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (1/1) ... [2021-03-11 11:27:15,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (1/1) ... [2021-03-11 11:27:15,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (1/1) ... [2021-03-11 11:27:15,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (1/1) ... [2021-03-11 11:27:15,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (1/1) ... [2021-03-11 11:27:15,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (1/1) ... [2021-03-11 11:27:15,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:27:15,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:27:15,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:27:15,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:27:15,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (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 [2021-03-11 11:27:15,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:27:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:27:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:27:15,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:27:15,165 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:27:15,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:27:15,166 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:27:15,166 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:27:15,167 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 11:27:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 11:27:15,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:27:15,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:27:15,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:27:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:27:15,169 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:27:15,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:27:15,567 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:27:15,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:27:15 BoogieIcfgContainer [2021-03-11 11:27:15,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:27:15,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:27:15,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:27:15,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:27:15,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:27:14" (1/3) ... [2021-03-11 11:27:15,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fee3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:27:15, skipping insertion in model container [2021-03-11 11:27:15,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:15" (2/3) ... [2021-03-11 11:27:15,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fee3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:27:15, skipping insertion in model container [2021-03-11 11:27:15,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:27:15" (3/3) ... [2021-03-11 11:27:15,576 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2021-03-11 11:27:15,581 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:27:15,581 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:27:15,585 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:27:15,586 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:27:15,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,624 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,625 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,625 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,625 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,625 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,626 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,626 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,626 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,626 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,627 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,628 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,628 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,629 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,629 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,630 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,630 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,631 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,631 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,631 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,631 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,632 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,632 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,634 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,634 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,635 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,635 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,640 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,640 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,640 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:15,644 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:27:15,658 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 11:27:15,674 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:27:15,674 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:27:15,674 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:27:15,674 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:27:15,674 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:27:15,674 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:27:15,674 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:27:15,675 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:27:15,686 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:27:15,694 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2021-03-11 11:27:15,697 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2021-03-11 11:27:15,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 11:27:15,749 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-11 11:27:15,749 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:27:15,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 11:27:15,756 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-03-11 11:27:17,878 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-03-11 11:27:18,064 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-03-11 11:27:18,117 INFO L131 LiptonReduction]: Checked pairs total: 2693 [2021-03-11 11:27:18,117 INFO L133 LiptonReduction]: Total number of compositions: 59 [2021-03-11 11:27:18,124 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-03-11 11:27:18,147 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:18,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:18,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 11:27:18,154 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:18,155 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:18,155 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:18,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:18,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1396936503, now seen corresponding path program 1 times [2021-03-11 11:27:18,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:18,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434377642] [2021-03-11 11:27:18,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:18,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:18,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:18,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:18,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:18,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434377642] [2021-03-11 11:27:18,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:18,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:27:18,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868125290] [2021-03-11 11:27:18,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 11:27:18,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:18,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 11:27:18,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:27:18,310 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:18,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:18,332 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-03-11 11:27:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 11:27:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-03-11 11:27:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:18,347 INFO L225 Difference]: With dead ends: 362 [2021-03-11 11:27:18,347 INFO L226 Difference]: Without dead ends: 298 [2021-03-11 11:27:18,348 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:27:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-03-11 11:27:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-03-11 11:27:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-03-11 11:27:18,438 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-03-11 11:27:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:18,439 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-03-11 11:27:18,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-03-11 11:27:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 11:27:18,441 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:18,441 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:18,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:27:18,441 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:18,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:18,442 INFO L82 PathProgramCache]: Analyzing trace with hash 355345073, now seen corresponding path program 1 times [2021-03-11 11:27:18,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:18,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482817892] [2021-03-11 11:27:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:18,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:18,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:18,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:18,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:18,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482817892] [2021-03-11 11:27:18,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:18,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:27:18,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215048784] [2021-03-11 11:27:18,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:18,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:18,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:18,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:18,575 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:18,608 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2021-03-11 11:27:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:18,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-03-11 11:27:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:18,614 INFO L225 Difference]: With dead ends: 346 [2021-03-11 11:27:18,614 INFO L226 Difference]: Without dead ends: 282 [2021-03-11 11:27:18,614 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:18,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-11 11:27:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-03-11 11:27:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.8612099644128115) internal successors, (804), 281 states have internal predecessors, (804), 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) [2021-03-11 11:27:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2021-03-11 11:27:18,635 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2021-03-11 11:27:18,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:18,635 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2021-03-11 11:27:18,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:18,636 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2021-03-11 11:27:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:27:18,637 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:18,637 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:18,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:27:18,637 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:18,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1971805489, now seen corresponding path program 1 times [2021-03-11 11:27:18,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:18,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376042610] [2021-03-11 11:27:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:18,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:18,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:18,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:18,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:18,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376042610] [2021-03-11 11:27:18,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:18,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:27:18,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022404983] [2021-03-11 11:27:18,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:18,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:18,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:18,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:18,738 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2021-03-11 11:27:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:18,760 INFO L93 Difference]: Finished difference Result 326 states and 888 transitions. [2021-03-11 11:27:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 [2021-03-11 11:27:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:18,764 INFO L225 Difference]: With dead ends: 326 [2021-03-11 11:27:18,764 INFO L226 Difference]: Without dead ends: 270 [2021-03-11 11:27:18,764 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:18,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-03-11 11:27:18,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-03-11 11:27:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.825278810408922) internal successors, (760), 269 states have internal predecessors, (760), 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) [2021-03-11 11:27:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 760 transitions. [2021-03-11 11:27:18,777 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 760 transitions. Word has length 10 [2021-03-11 11:27:18,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:18,777 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 760 transitions. [2021-03-11 11:27:18,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2021-03-11 11:27:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 760 transitions. [2021-03-11 11:27:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:27:18,778 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:18,778 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:18,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:27:18,779 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:18,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:18,786 INFO L82 PathProgramCache]: Analyzing trace with hash 147014533, now seen corresponding path program 1 times [2021-03-11 11:27:18,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:18,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810501664] [2021-03-11 11:27:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:18,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:18,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:18,881 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:18,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:18,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810501664] [2021-03-11 11:27:18,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:18,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:27:18,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413963505] [2021-03-11 11:27:18,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:18,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:18,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:18,888 INFO L87 Difference]: Start difference. First operand 270 states and 760 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) [2021-03-11 11:27:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:18,907 INFO L93 Difference]: Finished difference Result 304 states and 822 transitions. [2021-03-11 11:27:18,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:18,908 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 [2021-03-11 11:27:18,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:18,910 INFO L225 Difference]: With dead ends: 304 [2021-03-11 11:27:18,910 INFO L226 Difference]: Without dead ends: 260 [2021-03-11 11:27:18,911 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:18,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-03-11 11:27:18,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-03-11 11:27:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.7953667953667956) internal successors, (724), 259 states have internal predecessors, (724), 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) [2021-03-11 11:27:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 724 transitions. [2021-03-11 11:27:18,918 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 724 transitions. Word has length 11 [2021-03-11 11:27:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:18,918 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 724 transitions. [2021-03-11 11:27:18,918 INFO L481 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) [2021-03-11 11:27:18,918 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 724 transitions. [2021-03-11 11:27:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:27:18,926 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:18,926 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:18,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:27:18,926 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:18,929 INFO L82 PathProgramCache]: Analyzing trace with hash 262448525, now seen corresponding path program 1 times [2021-03-11 11:27:18,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:18,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410895227] [2021-03-11 11:27:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:18,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:18,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:18,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:18,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:18,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:18,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:19,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410895227] [2021-03-11 11:27:19,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:19,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:19,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931392869] [2021-03-11 11:27:19,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:19,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:19,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:19,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:19,002 INFO L87 Difference]: Start difference. First operand 260 states and 724 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:19,020 INFO L93 Difference]: Finished difference Result 398 states and 1047 transitions. [2021-03-11 11:27:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:19,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-03-11 11:27:19,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:19,022 INFO L225 Difference]: With dead ends: 398 [2021-03-11 11:27:19,022 INFO L226 Difference]: Without dead ends: 292 [2021-03-11 11:27:19,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:19,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-03-11 11:27:19,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 248. [2021-03-11 11:27:19,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.6558704453441297) internal successors, (656), 247 states have internal predecessors, (656), 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) [2021-03-11 11:27:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 656 transitions. [2021-03-11 11:27:19,031 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 656 transitions. Word has length 12 [2021-03-11 11:27:19,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:19,031 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 656 transitions. [2021-03-11 11:27:19,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,031 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 656 transitions. [2021-03-11 11:27:19,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:27:19,032 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:19,032 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:19,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:27:19,032 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:19,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1487038153, now seen corresponding path program 1 times [2021-03-11 11:27:19,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:19,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394917961] [2021-03-11 11:27:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:19,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:19,061 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:27:19,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:27:19,068 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:19,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:19,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394917961] [2021-03-11 11:27:19,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:19,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:19,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355129724] [2021-03-11 11:27:19,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:19,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:19,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:19,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:19,073 INFO L87 Difference]: Start difference. First operand 248 states and 656 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:19,109 INFO L93 Difference]: Finished difference Result 388 states and 1000 transitions. [2021-03-11 11:27:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-03-11 11:27:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:19,111 INFO L225 Difference]: With dead ends: 388 [2021-03-11 11:27:19,112 INFO L226 Difference]: Without dead ends: 292 [2021-03-11 11:27:19,112 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-03-11 11:27:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 244. [2021-03-11 11:27:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.460905349794239) internal successors, (598), 243 states have internal predecessors, (598), 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) [2021-03-11 11:27:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 598 transitions. [2021-03-11 11:27:19,122 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 598 transitions. Word has length 12 [2021-03-11 11:27:19,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:19,123 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 598 transitions. [2021-03-11 11:27:19,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 598 transitions. [2021-03-11 11:27:19,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:27:19,123 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:19,124 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:19,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:27:19,124 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:19,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:19,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1502085491, now seen corresponding path program 1 times [2021-03-11 11:27:19,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:19,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510606937] [2021-03-11 11:27:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:19,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:19,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510606937] [2021-03-11 11:27:19,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:19,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:19,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111264675] [2021-03-11 11:27:19,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:19,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:19,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:19,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:19,242 INFO L87 Difference]: Start difference. First operand 244 states and 598 transitions. Second operand has 4 states, 4 states have (on average 3.0) 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) [2021-03-11 11:27:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:19,271 INFO L93 Difference]: Finished difference Result 248 states and 536 transitions. [2021-03-11 11:27:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:19,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) 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 [2021-03-11 11:27:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:19,280 INFO L225 Difference]: With dead ends: 248 [2021-03-11 11:27:19,280 INFO L226 Difference]: Without dead ends: 187 [2021-03-11 11:27:19,280 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-03-11 11:27:19,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-03-11 11:27:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.1236559139784945) internal successors, (395), 186 states have internal predecessors, (395), 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) [2021-03-11 11:27:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 395 transitions. [2021-03-11 11:27:19,287 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 395 transitions. Word has length 12 [2021-03-11 11:27:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:19,287 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 395 transitions. [2021-03-11 11:27:19,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) 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) [2021-03-11 11:27:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 395 transitions. [2021-03-11 11:27:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:27:19,288 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:19,288 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:19,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:27:19,288 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:19,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:19,289 INFO L82 PathProgramCache]: Analyzing trace with hash 749187583, now seen corresponding path program 1 times [2021-03-11 11:27:19,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:19,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366183577] [2021-03-11 11:27:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:19,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:19,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:19,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:19,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366183577] [2021-03-11 11:27:19,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:19,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:19,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699743968] [2021-03-11 11:27:19,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:19,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:19,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:19,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:19,322 INFO L87 Difference]: Start difference. First operand 187 states and 395 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:19,339 INFO L93 Difference]: Finished difference Result 245 states and 491 transitions. [2021-03-11 11:27:19,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 11:27:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:19,341 INFO L225 Difference]: With dead ends: 245 [2021-03-11 11:27:19,341 INFO L226 Difference]: Without dead ends: 201 [2021-03-11 11:27:19,341 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:19,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-03-11 11:27:19,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 174. [2021-03-11 11:27:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.098265895953757) internal successors, (363), 173 states have internal predecessors, (363), 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) [2021-03-11 11:27:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 363 transitions. [2021-03-11 11:27:19,346 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 363 transitions. Word has length 13 [2021-03-11 11:27:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:19,347 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 363 transitions. [2021-03-11 11:27:19,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 363 transitions. [2021-03-11 11:27:19,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:27:19,347 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:19,347 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:19,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:27:19,348 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:19,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:19,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1990305454, now seen corresponding path program 1 times [2021-03-11 11:27:19,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:19,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417686710] [2021-03-11 11:27:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:19,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:19,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:19,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:19,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417686710] [2021-03-11 11:27:19,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:19,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:19,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390234973] [2021-03-11 11:27:19,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:19,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:19,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:19,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:19,408 INFO L87 Difference]: Start difference. First operand 174 states and 363 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:19,433 INFO L93 Difference]: Finished difference Result 232 states and 459 transitions. [2021-03-11 11:27:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:19,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 11:27:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:19,435 INFO L225 Difference]: With dead ends: 232 [2021-03-11 11:27:19,435 INFO L226 Difference]: Without dead ends: 188 [2021-03-11 11:27:19,436 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:19,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-03-11 11:27:19,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 165. [2021-03-11 11:27:19,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.073170731707317) internal successors, (340), 164 states have internal predecessors, (340), 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) [2021-03-11 11:27:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 340 transitions. [2021-03-11 11:27:19,445 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 340 transitions. Word has length 13 [2021-03-11 11:27:19,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:19,445 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 340 transitions. [2021-03-11 11:27:19,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 340 transitions. [2021-03-11 11:27:19,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-11 11:27:19,446 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:19,446 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:19,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 11:27:19,446 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:19,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:19,446 INFO L82 PathProgramCache]: Analyzing trace with hash -667360468, now seen corresponding path program 1 times [2021-03-11 11:27:19,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:19,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686034014] [2021-03-11 11:27:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:19,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:19,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686034014] [2021-03-11 11:27:19,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:19,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:27:19,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153948066] [2021-03-11 11:27:19,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:27:19,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:19,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:27:19,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:19,485 INFO L87 Difference]: Start difference. First operand 165 states and 340 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:19,514 INFO L93 Difference]: Finished difference Result 147 states and 274 transitions. [2021-03-11 11:27:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:27:19,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-11 11:27:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:19,516 INFO L225 Difference]: With dead ends: 147 [2021-03-11 11:27:19,516 INFO L226 Difference]: Without dead ends: 96 [2021-03-11 11:27:19,516 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:27:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-03-11 11:27:19,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-03-11 11:27:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 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) [2021-03-11 11:27:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 163 transitions. [2021-03-11 11:27:19,519 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 163 transitions. Word has length 14 [2021-03-11 11:27:19,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:19,519 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 163 transitions. [2021-03-11 11:27:19,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 163 transitions. [2021-03-11 11:27:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 11:27:19,519 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:19,520 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:19,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 11:27:19,520 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:19,520 INFO L82 PathProgramCache]: Analyzing trace with hash -2052251268, now seen corresponding path program 1 times [2021-03-11 11:27:19,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:19,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180595920] [2021-03-11 11:27:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:19,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:19,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:19,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:19,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180595920] [2021-03-11 11:27:19,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:19,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 11:27:19,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334219631] [2021-03-11 11:27:19,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:27:19,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:19,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:27:19,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:27:19,593 INFO L87 Difference]: Start difference. First operand 96 states and 163 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:19,616 INFO L93 Difference]: Finished difference Result 82 states and 141 transitions. [2021-03-11 11:27:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:27:19,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-03-11 11:27:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:19,617 INFO L225 Difference]: With dead ends: 82 [2021-03-11 11:27:19,617 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:27:19,617 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:27:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:27:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:27:19,617 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) [2021-03-11 11:27:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:27:19,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-03-11 11:27:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:19,619 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:27:19,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:19,619 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:27:19,619 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:27:19,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 11:27:19,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:27:19 BasicIcfg [2021-03-11 11:27:19,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:27:19,627 INFO L168 Benchmark]: Toolchain (without parser) took 5047.93 ms. Allocated memory was 255.9 MB in the beginning and 457.2 MB in the end (delta: 201.3 MB). Free memory was 234.6 MB in the beginning and 372.4 MB in the end (delta: -137.8 MB). Peak memory consumption was 63.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:19,628 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:27:19,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.67 ms. Allocated memory was 255.9 MB in the beginning and 379.6 MB in the end (delta: 123.7 MB). Free memory was 234.0 MB in the beginning and 341.9 MB in the end (delta: -108.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:19,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.81 ms. Allocated memory is still 379.6 MB. Free memory was 341.9 MB in the beginning and 339.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:19,630 INFO L168 Benchmark]: Boogie Preprocessor took 30.87 ms. Allocated memory is still 379.6 MB. Free memory was 339.8 MB in the beginning and 338.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:19,630 INFO L168 Benchmark]: RCFGBuilder took 485.08 ms. Allocated memory is still 379.6 MB. Free memory was 338.2 MB in the beginning and 316.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:19,631 INFO L168 Benchmark]: TraceAbstraction took 4052.56 ms. Allocated memory was 379.6 MB in the beginning and 457.2 MB in the end (delta: 77.6 MB). Free memory was 316.1 MB in the beginning and 372.4 MB in the end (delta: -56.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:19,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 423.67 ms. Allocated memory was 255.9 MB in the beginning and 379.6 MB in the end (delta: 123.7 MB). Free memory was 234.0 MB in the beginning and 341.9 MB in the end (delta: -108.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 47.81 ms. Allocated memory is still 379.6 MB. Free memory was 341.9 MB in the beginning and 339.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.87 ms. Allocated memory is still 379.6 MB. Free memory was 339.8 MB in the beginning and 338.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 485.08 ms. Allocated memory is still 379.6 MB. Free memory was 338.2 MB in the beginning and 316.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4052.56 ms. Allocated memory was 379.6 MB in the beginning and 457.2 MB in the end (delta: 77.6 MB). Free memory was 316.1 MB in the beginning and 372.4 MB in the end (delta: -56.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2420.7ms, 81 PlacesBefore, 32 PlacesAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2693 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1411, positive: 1314, positive conditional: 0, positive unconditional: 1314, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 847, positive: 815, positive conditional: 0, positive unconditional: 815, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 847, positive: 809, positive conditional: 0, positive unconditional: 809, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 154, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 122, negative conditional: 0, negative unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1411, positive: 499, positive conditional: 0, positive unconditional: 499, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 847, unknown conditional: 0, unknown unconditional: 847] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3948.0ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 21.6ms, AutomataDifference: 343.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2472.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 282 SDtfs, 200 SDslu, 374 SDs, 0 SdLazy, 121 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 124.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 157.8ms AutomataMinimizationTime, 11 MinimizatonAttempts, 142 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.8ms SsaConstructionTime, 209.6ms SatisfiabilityAnalysisTime, 525.8ms InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...