/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 00:00:12,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 00:00:12,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 00:00:12,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 00:00:12,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 00:00:12,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 00:00:12,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 00:00:12,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 00:00:12,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 00:00:12,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 00:00:12,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 00:00:12,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 00:00:12,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 00:00:12,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 00:00:12,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 00:00:12,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 00:00:12,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 00:00:12,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 00:00:12,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 00:00:12,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 00:00:12,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 00:00:12,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 00:00:12,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 00:00:12,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 00:00:12,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 00:00:12,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 00:00:12,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 00:00:12,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 00:00:12,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 00:00:12,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 00:00:12,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 00:00:12,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 00:00:12,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 00:00:12,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 00:00:12,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 00:00:12,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 00:00:12,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-11-12 00:00:12,717 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 00:00:12,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 00:00:12,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 00:00:12,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 00:00:12,722 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 00:00:12,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 00:00:12,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 00:00:12,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 00:00:12,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 00:00:12,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 00:00:12,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 00:00:12,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 00:00:12,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 00:00:12,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 00:00:12,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 00:00:12,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 00:00:12,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 00:00:12,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 00:00:12,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 00:00:12,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 00:00:12,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 00:00:12,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:00:12,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 00:00:12,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 00:00:12,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 00:00:12,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 00:00:12,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 00:00:12,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 00:00:12,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 00:00:13,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 00:00:13,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 00:00:13,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 00:00:13,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 00:00:13,164 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 00:00:13,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i [2020-11-12 00:00:13,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2099f0f/73d2aef72849443e92d5049cafc28591/FLAGd6be9143a [2020-11-12 00:00:13,998 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 00:00:13,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i [2020-11-12 00:00:14,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2099f0f/73d2aef72849443e92d5049cafc28591/FLAGd6be9143a [2020-11-12 00:00:14,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2099f0f/73d2aef72849443e92d5049cafc28591 [2020-11-12 00:00:14,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 00:00:14,232 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 00:00:14,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 00:00:14,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 00:00:14,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 00:00:14,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:00:14" (1/1) ... [2020-11-12 00:00:14,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19044a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:14, skipping insertion in model container [2020-11-12 00:00:14,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:00:14" (1/1) ... [2020-11-12 00:00:14,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 00:00:14,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 00:00:14,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:00:14,954 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 00:00:14,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:00:15,091 INFO L208 MainTranslator]: Completed translation [2020-11-12 00:00:15,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15 WrapperNode [2020-11-12 00:00:15,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 00:00:15,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 00:00:15,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 00:00:15,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 00:00:15,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (1/1) ... [2020-11-12 00:00:15,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (1/1) ... [2020-11-12 00:00:15,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 00:00:15,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 00:00:15,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 00:00:15,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 00:00:15,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (1/1) ... [2020-11-12 00:00:15,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (1/1) ... [2020-11-12 00:00:15,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (1/1) ... [2020-11-12 00:00:15,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (1/1) ... [2020-11-12 00:00:15,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (1/1) ... [2020-11-12 00:00:15,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (1/1) ... [2020-11-12 00:00:15,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (1/1) ... [2020-11-12 00:00:15,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 00:00:15,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 00:00:15,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 00:00:15,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 00:00:15,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (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 [2020-11-12 00:00:15,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 00:00:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 00:00:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 00:00:15,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 00:00:15,252 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 00:00:15,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 00:00:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 00:00:15,253 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 00:00:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 00:00:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 00:00:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-12 00:00:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-12 00:00:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 00:00:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 00:00:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 00:00:15,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 00:00:15,260 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 00:00:15,800 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 00:00:15,800 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 00:00:15,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:00:15 BoogieIcfgContainer [2020-11-12 00:00:15,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 00:00:15,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 00:00:15,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 00:00:15,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 00:00:15,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:00:14" (1/3) ... [2020-11-12 00:00:15,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58db955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:00:15, skipping insertion in model container [2020-11-12 00:00:15,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:00:15" (2/3) ... [2020-11-12 00:00:15,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58db955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:00:15, skipping insertion in model container [2020-11-12 00:00:15,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:00:15" (3/3) ... [2020-11-12 00:00:15,812 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2020-11-12 00:00:15,828 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 00:00:15,829 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 00:00:15,832 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 00:00:15,833 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 00:00:15,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,878 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,878 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,879 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,879 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,881 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,881 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,881 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,881 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,882 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,882 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,882 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,882 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,884 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,884 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,884 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,884 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,885 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,885 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,885 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,885 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,886 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,886 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,886 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,886 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,887 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,887 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,887 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,887 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,888 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,888 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,888 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,888 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,889 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,889 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,889 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,889 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,891 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,892 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,892 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,892 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,903 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,903 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,904 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,904 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,907 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,912 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,912 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,912 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,913 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:00:15,915 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 00:00:15,928 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-12 00:00:15,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 00:00:15,952 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 00:00:15,952 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 00:00:15,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 00:00:15,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 00:00:15,952 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 00:00:15,953 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 00:00:15,953 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 00:00:15,967 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 00:00:15,969 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 90 transitions, 200 flow [2020-11-12 00:00:15,972 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 90 transitions, 200 flow [2020-11-12 00:00:15,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 90 transitions, 200 flow [2020-11-12 00:00:16,022 INFO L129 PetriNetUnfolder]: 3/86 cut-off events. [2020-11-12 00:00:16,023 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-12 00:00:16,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 3/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-11-12 00:00:16,032 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-11-12 00:00:19,607 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-11-12 00:00:20,047 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-12 00:00:20,660 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-12 00:00:20,767 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-12 00:00:21,023 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-12 00:00:21,139 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-12 00:00:21,415 INFO L131 LiptonReduction]: Checked pairs total: 3781 [2020-11-12 00:00:21,415 INFO L133 LiptonReduction]: Total number of compositions: 78 [2020-11-12 00:00:21,422 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-11-12 00:00:21,473 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 706 states, 704 states have (on average 3.46875) internal successors, (2442), 705 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 706 states, 704 states have (on average 3.46875) internal successors, (2442), 705 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-12 00:00:21,487 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:21,488 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:21,488 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:21,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:21,494 INFO L82 PathProgramCache]: Analyzing trace with hash 549858337, now seen corresponding path program 1 times [2020-11-12 00:00:21,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:21,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975491377] [2020-11-12 00:00:21,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:21,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975491377] [2020-11-12 00:00:21,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:21,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:00:21,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974876626] [2020-11-12 00:00:21,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:00:21,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:21,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:00:21,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:00:21,860 INFO L87 Difference]: Start difference. First operand has 706 states, 704 states have (on average 3.46875) internal successors, (2442), 705 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:21,943 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-11-12 00:00:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:00:21,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2020-11-12 00:00:21,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:21,983 INFO L225 Difference]: With dead ends: 670 [2020-11-12 00:00:21,983 INFO L226 Difference]: Without dead ends: 526 [2020-11-12 00:00:21,985 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:00:22,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-11-12 00:00:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-11-12 00:00:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 3.32) internal successors, (1743), 525 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-11-12 00:00:22,083 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-11-12 00:00:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:22,084 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-11-12 00:00:22,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-11-12 00:00:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-12 00:00:22,087 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:22,088 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:22,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 00:00:22,088 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:22,089 INFO L82 PathProgramCache]: Analyzing trace with hash -152077670, now seen corresponding path program 1 times [2020-11-12 00:00:22,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:22,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084814814] [2020-11-12 00:00:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:22,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084814814] [2020-11-12 00:00:22,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:22,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:00:22,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753259983] [2020-11-12 00:00:22,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:00:22,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:22,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:00:22,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:00:22,192 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:22,227 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-11-12 00:00:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:00:22,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2020-11-12 00:00:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:22,232 INFO L225 Difference]: With dead ends: 682 [2020-11-12 00:00:22,232 INFO L226 Difference]: Without dead ends: 394 [2020-11-12 00:00:22,233 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:00:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-11-12 00:00:22,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-11-12 00:00:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.114503816793893) internal successors, (1224), 393 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-11-12 00:00:22,255 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-11-12 00:00:22,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:22,256 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-11-12 00:00:22,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-11-12 00:00:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-12 00:00:22,258 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:22,259 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:22,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 00:00:22,259 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:22,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1996572202, now seen corresponding path program 1 times [2020-11-12 00:00:22,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:22,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884538886] [2020-11-12 00:00:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:22,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884538886] [2020-11-12 00:00:22,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:22,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:00:22,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403834477] [2020-11-12 00:00:22,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:00:22,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:22,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:00:22,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:00:22,330 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:22,354 INFO L93 Difference]: Finished difference Result 386 states and 1190 transitions. [2020-11-12 00:00:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:00:22,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2020-11-12 00:00:22,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:22,358 INFO L225 Difference]: With dead ends: 386 [2020-11-12 00:00:22,358 INFO L226 Difference]: Without dead ends: 386 [2020-11-12 00:00:22,358 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:00:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-11-12 00:00:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2020-11-12 00:00:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.090909090909091) internal successors, (1190), 385 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1190 transitions. [2020-11-12 00:00:22,373 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1190 transitions. Word has length 12 [2020-11-12 00:00:22,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:22,374 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 1190 transitions. [2020-11-12 00:00:22,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,374 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1190 transitions. [2020-11-12 00:00:22,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-12 00:00:22,376 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:22,376 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:22,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 00:00:22,376 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:22,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:22,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1824495017, now seen corresponding path program 1 times [2020-11-12 00:00:22,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:22,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504563649] [2020-11-12 00:00:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:22,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504563649] [2020-11-12 00:00:22,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:22,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:00:22,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103014667] [2020-11-12 00:00:22,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:00:22,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:22,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:00:22,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:00:22,416 INFO L87 Difference]: Start difference. First operand 386 states and 1190 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:22,435 INFO L93 Difference]: Finished difference Result 466 states and 1378 transitions. [2020-11-12 00:00:22,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:00:22,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-12 00:00:22,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:22,439 INFO L225 Difference]: With dead ends: 466 [2020-11-12 00:00:22,440 INFO L226 Difference]: Without dead ends: 402 [2020-11-12 00:00:22,440 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:00:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-11-12 00:00:22,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 370. [2020-11-12 00:00:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 2.975609756097561) internal successors, (1098), 369 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1098 transitions. [2020-11-12 00:00:22,454 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1098 transitions. Word has length 13 [2020-11-12 00:00:22,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:22,454 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 1098 transitions. [2020-11-12 00:00:22,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1098 transitions. [2020-11-12 00:00:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-12 00:00:22,456 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:22,456 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:22,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 00:00:22,456 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:22,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1764197506, now seen corresponding path program 1 times [2020-11-12 00:00:22,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:22,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008100161] [2020-11-12 00:00:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:22,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008100161] [2020-11-12 00:00:22,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:22,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:00:22,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770572442] [2020-11-12 00:00:22,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:00:22,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:22,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:00:22,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:00:22,498 INFO L87 Difference]: Start difference. First operand 370 states and 1098 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:22,508 INFO L93 Difference]: Finished difference Result 358 states and 1054 transitions. [2020-11-12 00:00:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:00:22,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-12 00:00:22,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:22,512 INFO L225 Difference]: With dead ends: 358 [2020-11-12 00:00:22,512 INFO L226 Difference]: Without dead ends: 358 [2020-11-12 00:00:22,513 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:00:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-12 00:00:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-11-12 00:00:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.9523809523809526) internal successors, (1054), 357 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1054 transitions. [2020-11-12 00:00:22,530 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1054 transitions. Word has length 13 [2020-11-12 00:00:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:22,530 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 1054 transitions. [2020-11-12 00:00:22,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1054 transitions. [2020-11-12 00:00:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-12 00:00:22,532 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:22,532 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:22,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 00:00:22,532 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:22,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:22,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1381968937, now seen corresponding path program 1 times [2020-11-12 00:00:22,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:22,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301516488] [2020-11-12 00:00:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:22,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301516488] [2020-11-12 00:00:22,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:22,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:00:22,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873201670] [2020-11-12 00:00:22,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:00:22,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:22,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:00:22,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:00:22,608 INFO L87 Difference]: Start difference. First operand 358 states and 1054 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:22,639 INFO L93 Difference]: Finished difference Result 514 states and 1482 transitions. [2020-11-12 00:00:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:00:22,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2020-11-12 00:00:22,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:22,642 INFO L225 Difference]: With dead ends: 514 [2020-11-12 00:00:22,642 INFO L226 Difference]: Without dead ends: 274 [2020-11-12 00:00:22,643 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:00:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-11-12 00:00:22,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-11-12 00:00:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.838827838827839) internal successors, (775), 273 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-11-12 00:00:22,653 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 14 [2020-11-12 00:00:22,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:22,653 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-11-12 00:00:22,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,654 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-11-12 00:00:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-12 00:00:22,654 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:22,655 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:22,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 00:00:22,655 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:22,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:22,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1144451177, now seen corresponding path program 2 times [2020-11-12 00:00:22,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:22,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569040339] [2020-11-12 00:00:22,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:22,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569040339] [2020-11-12 00:00:22,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:22,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:00:22,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288125864] [2020-11-12 00:00:22,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:00:22,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:22,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:00:22,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:00:22,720 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:22,766 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-11-12 00:00:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:00:22,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2020-11-12 00:00:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:22,769 INFO L225 Difference]: With dead ends: 345 [2020-11-12 00:00:22,769 INFO L226 Difference]: Without dead ends: 252 [2020-11-12 00:00:22,770 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:00:22,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-11-12 00:00:22,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-11-12 00:00:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.689243027888446) internal successors, (675), 251 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-11-12 00:00:22,779 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-11-12 00:00:22,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:22,780 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-11-12 00:00:22,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-11-12 00:00:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-12 00:00:22,781 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:22,781 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:22,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 00:00:22,782 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:22,782 INFO L82 PathProgramCache]: Analyzing trace with hash -738728671, now seen corresponding path program 1 times [2020-11-12 00:00:22,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:22,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451088595] [2020-11-12 00:00:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:22,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451088595] [2020-11-12 00:00:22,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:22,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:00:22,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860817539] [2020-11-12 00:00:22,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:00:22,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:22,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:00:22,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:00:22,830 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:22,883 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-11-12 00:00:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:00:22,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2020-11-12 00:00:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:22,886 INFO L225 Difference]: With dead ends: 278 [2020-11-12 00:00:22,886 INFO L226 Difference]: Without dead ends: 203 [2020-11-12 00:00:22,886 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:00:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-12 00:00:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-11-12 00:00:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 2.4356435643564356) internal successors, (492), 202 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-11-12 00:00:22,893 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-11-12 00:00:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:22,894 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-11-12 00:00:22,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-11-12 00:00:22,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-12 00:00:22,895 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:22,895 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:22,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 00:00:22,895 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:22,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:22,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1466902334, now seen corresponding path program 1 times [2020-11-12 00:00:22,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:22,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203764642] [2020-11-12 00:00:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:22,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203764642] [2020-11-12 00:00:22,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:22,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 00:00:22,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906227122] [2020-11-12 00:00:22,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 00:00:22,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:22,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 00:00:22,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:00:22,948 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand has 6 states, 5 states have (on average 3.2) 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) [2020-11-12 00:00:23,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:23,010 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-11-12 00:00:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 00:00:23,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) 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 [2020-11-12 00:00:23,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:23,012 INFO L225 Difference]: With dead ends: 200 [2020-11-12 00:00:23,012 INFO L226 Difference]: Without dead ends: 162 [2020-11-12 00:00:23,012 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:00:23,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-12 00:00:23,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-11-12 00:00:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.329192546583851) internal successors, (375), 161 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-11-12 00:00:23,021 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-11-12 00:00:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:23,021 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-11-12 00:00:23,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.2) 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) [2020-11-12 00:00:23,021 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-11-12 00:00:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-12 00:00:23,042 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:23,042 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:23,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 00:00:23,043 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:23,043 INFO L82 PathProgramCache]: Analyzing trace with hash 768450722, now seen corresponding path program 1 times [2020-11-12 00:00:23,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:23,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777050435] [2020-11-12 00:00:23,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:23,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777050435] [2020-11-12 00:00:23,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:23,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:00:23,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52263271] [2020-11-12 00:00:23,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:00:23,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:23,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:00:23,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:00:23,100 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:23,124 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-11-12 00:00:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:00:23,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2020-11-12 00:00:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:23,126 INFO L225 Difference]: With dead ends: 194 [2020-11-12 00:00:23,126 INFO L226 Difference]: Without dead ends: 127 [2020-11-12 00:00:23,127 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:00:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-12 00:00:23,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-11-12 00:00:23,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.1370967741935485) internal successors, (265), 124 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:23,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-11-12 00:00:23,132 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-11-12 00:00:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:23,135 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-11-12 00:00:23,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-11-12 00:00:23,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-12 00:00:23,136 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:23,136 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:23,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 00:00:23,137 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:23,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:23,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1186280206, now seen corresponding path program 2 times [2020-11-12 00:00:23,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:23,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153361811] [2020-11-12 00:00:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:23,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153361811] [2020-11-12 00:00:23,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:23,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 00:00:23,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497852727] [2020-11-12 00:00:23,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 00:00:23,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:23,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 00:00:23,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:00:23,225 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:23,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:23,301 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-11-12 00:00:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 00:00:23,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2020-11-12 00:00:23,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:23,303 INFO L225 Difference]: With dead ends: 120 [2020-11-12 00:00:23,303 INFO L226 Difference]: Without dead ends: 71 [2020-11-12 00:00:23,303 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-12 00:00:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-12 00:00:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-12 00:00:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.0428571428571427) internal successors, (143), 70 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-11-12 00:00:23,307 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-11-12 00:00:23,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:23,307 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-11-12 00:00:23,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:23,308 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-11-12 00:00:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-12 00:00:23,309 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:00:23,309 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:00:23,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-12 00:00:23,309 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:00:23,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:00:23,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1846337557, now seen corresponding path program 1 times [2020-11-12 00:00:23,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:00:23,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860702303] [2020-11-12 00:00:23,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:00:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:00:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:00:23,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860702303] [2020-11-12 00:00:23,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:00:23,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:00:23,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692409170] [2020-11-12 00:00:23,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:00:23,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:00:23,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:00:23,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:00:23,357 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:00:23,374 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-11-12 00:00:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:00:23,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2020-11-12 00:00:23,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:00:23,374 INFO L225 Difference]: With dead ends: 70 [2020-11-12 00:00:23,375 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 00:00:23,375 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:00:23,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 00:00:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 00:00:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 00:00:23,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-11-12 00:00:23,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:00:23,377 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 00:00:23,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:00:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 00:00:23,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 00:00:23,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-12 00:00:23,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:00:23 BasicIcfg [2020-11-12 00:00:23,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 00:00:23,387 INFO L168 Benchmark]: Toolchain (without parser) took 9155.76 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 254.1 MB in the beginning and 300.9 MB in the end (delta: -46.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-12 00:00:23,388 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 272.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:00:23,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 854.66 ms. Allocated memory is still 302.0 MB. Free memory was 253.5 MB in the beginning and 262.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.0 GB. [2020-11-12 00:00:23,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.84 ms. Allocated memory is still 302.0 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:00:23,392 INFO L168 Benchmark]: Boogie Preprocessor took 29.22 ms. Allocated memory is still 302.0 MB. Free memory was 260.2 MB in the beginning and 258.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:00:23,395 INFO L168 Benchmark]: RCFGBuilder took 629.96 ms. Allocated memory is still 302.0 MB. Free memory was 258.7 MB in the beginning and 277.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.0 GB. [2020-11-12 00:00:23,398 INFO L168 Benchmark]: TraceAbstraction took 7576.61 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 276.1 MB in the beginning and 300.9 MB in the end (delta: -24.8 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.0 GB. [2020-11-12 00:00:23,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 272.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 854.66 ms. Allocated memory is still 302.0 MB. Free memory was 253.5 MB in the beginning and 262.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.84 ms. Allocated memory is still 302.0 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.22 ms. Allocated memory is still 302.0 MB. Free memory was 260.2 MB in the beginning and 258.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 629.96 ms. Allocated memory is still 302.0 MB. Free memory was 258.7 MB in the beginning and 277.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7576.61 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 276.1 MB in the beginning and 300.9 MB in the end (delta: -24.8 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1403 VarBasedMoverChecksPositive, 85 VarBasedMoverChecksNegative, 27 SemBasedMoverChecksPositive, 58 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 104 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.4s, 100 PlacesBefore, 38 PlacesAfterwards, 90 TransitionsBefore, 25 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 78 TotalNumberOfCompositions, 3781 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 259 SDtfs, 225 SDslu, 347 SDs, 0 SdLazy, 196 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 6214 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...