/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/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:43:12,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:43:12,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:43:12,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:43:12,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:43:12,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:43:12,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:43:12,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:43:12,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:43:12,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:43:12,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:43:12,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:43:12,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:43:12,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:43:12,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:43:12,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:43:12,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:43:12,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:43:12,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:43:12,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:43:12,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:43:12,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:43:12,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:43:12,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:43:12,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 23:43:12,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:43:12,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:43:12,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:43:12,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:43:12,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:43:12,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:43:12,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:43:12,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:43:12,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:43:12,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:43:12,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:43:12,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-11-11 23:43:12,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:43:12,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:43:12,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:43:12,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:43:12,932 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:43:12,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:43:12,932 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:43:12,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:43:12,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:43:12,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:43:12,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:43:12,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:43:12,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:43:12,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:43:12,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:43:12,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:43:12,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:43:12,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:43:12,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:43:12,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:43:12,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:43:12,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:43:12,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:43:12,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:43:12,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:43:12,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:43:12,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:43:12,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:43:12,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:43:13,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:43:13,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:43:13,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:43:13,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:43:13,415 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:43:13,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-11-11 23:43:13,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d153440e4/5c08d612427642eeab1de20cf1291e96/FLAGc2348a391 [2020-11-11 23:43:14,346 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:43:14,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-11-11 23:43:14,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d153440e4/5c08d612427642eeab1de20cf1291e96/FLAGc2348a391 [2020-11-11 23:43:14,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d153440e4/5c08d612427642eeab1de20cf1291e96 [2020-11-11 23:43:14,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:43:14,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:43:14,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:43:14,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:43:14,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:43:14,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:43:14" (1/1) ... [2020-11-11 23:43:14,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56547e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:14, skipping insertion in model container [2020-11-11 23:43:14,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:43:14" (1/1) ... [2020-11-11 23:43:14,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:43:14,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:43:15,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:43:15,058 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:43:15,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:43:15,303 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:43:15,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15 WrapperNode [2020-11-11 23:43:15,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:43:15,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:43:15,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:43:15,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:43:15,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (1/1) ... [2020-11-11 23:43:15,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (1/1) ... [2020-11-11 23:43:15,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:43:15,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:43:15,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:43:15,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:43:15,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (1/1) ... [2020-11-11 23:43:15,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (1/1) ... [2020-11-11 23:43:15,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (1/1) ... [2020-11-11 23:43:15,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (1/1) ... [2020-11-11 23:43:15,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (1/1) ... [2020-11-11 23:43:15,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (1/1) ... [2020-11-11 23:43:15,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (1/1) ... [2020-11-11 23:43:15,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:43:15,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:43:15,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:43:15,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:43:15,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (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 [2020-11-11 23:43:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:43:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:43:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:43:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:43:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:43:15,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:43:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:43:15,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:43:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:43:15,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:43:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:43:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:43:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:43:15,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:43:15,565 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 23:43:16,141 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:43:16,141 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:43:16,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:43:16 BoogieIcfgContainer [2020-11-11 23:43:16,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:43:16,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:43:16,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:43:16,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:43:16,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:43:14" (1/3) ... [2020-11-11 23:43:16,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f13839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:43:16, skipping insertion in model container [2020-11-11 23:43:16,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:43:15" (2/3) ... [2020-11-11 23:43:16,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f13839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:43:16, skipping insertion in model container [2020-11-11 23:43:16,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:43:16" (3/3) ... [2020-11-11 23:43:16,153 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-11-11 23:43:16,170 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:43:16,170 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:43:16,174 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:43:16,175 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:43:16,205 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,207 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,207 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,209 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,209 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,210 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,210 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,210 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,210 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,211 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,211 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,211 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,211 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,212 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,212 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,212 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,213 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,213 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,214 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,214 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,214 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,215 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,215 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,226 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,226 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,229 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,229 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:43:16,232 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:43:16,245 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:43:16,270 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:43:16,270 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:43:16,270 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:43:16,271 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:43:16,271 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:43:16,271 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:43:16,271 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:43:16,271 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:43:16,283 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:43:16,286 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-11 23:43:16,289 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-11 23:43:16,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 23:43:16,336 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-11 23:43:16,336 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:43:16,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-11 23:43:16,344 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-11 23:43:19,174 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-11-11 23:43:19,388 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-11-11 23:43:19,822 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-11 23:43:20,389 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-11 23:43:20,532 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:43:20,756 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-11 23:43:20,862 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:43:21,099 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-11-11 23:43:21,302 INFO L131 LiptonReduction]: Checked pairs total: 2853 [2020-11-11 23:43:21,303 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-11 23:43:21,310 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-11 23:43:21,338 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:43:21,351 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:43:21,355 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:43:21,355 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:43:21,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:43:21,362 INFO L82 PathProgramCache]: Analyzing trace with hash -259919829, now seen corresponding path program 1 times [2020-11-11 23:43:21,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:43:21,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585484677] [2020-11-11 23:43:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:43:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:43:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:43:21,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585484677] [2020-11-11 23:43:21,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:43:21,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:43:21,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750737868] [2020-11-11 23:43:21,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:43:21,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:43:21,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:43:21,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:43:21,670 INFO L87 Difference]: Start difference. First operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:21,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:43:21,729 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-11 23:43:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:43:21,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2020-11-11 23:43:21,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:43:21,762 INFO L225 Difference]: With dead ends: 282 [2020-11-11 23:43:21,763 INFO L226 Difference]: Without dead ends: 218 [2020-11-11 23:43:21,770 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:43:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-11 23:43:21,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-11 23:43:21,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.7649769585253456) internal successors, (600), 217 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-11 23:43:21,878 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-11 23:43:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:43:21,879 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-11 23:43:21,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-11 23:43:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:43:21,882 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:43:21,882 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:43:21,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:43:21,883 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:43:21,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:43:21,886 INFO L82 PathProgramCache]: Analyzing trace with hash 532418600, now seen corresponding path program 1 times [2020-11-11 23:43:21,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:43:21,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139438042] [2020-11-11 23:43:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:43:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:43:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:43:21,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139438042] [2020-11-11 23:43:21,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:43:21,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:43:21,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721018470] [2020-11-11 23:43:22,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:43:22,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:43:22,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:43:22,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:43:22,002 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:43:22,039 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-11-11 23:43:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:43:22,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2020-11-11 23:43:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:43:22,042 INFO L225 Difference]: With dead ends: 296 [2020-11-11 23:43:22,042 INFO L226 Difference]: Without dead ends: 200 [2020-11-11 23:43:22,043 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:43:22,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-11 23:43:22,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-11-11 23:43:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.693467336683417) internal successors, (536), 199 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-11-11 23:43:22,064 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-11-11 23:43:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:43:22,064 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-11-11 23:43:22,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-11-11 23:43:22,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-11 23:43:22,066 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:43:22,066 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:43:22,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:43:22,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:43:22,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:43:22,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1110527125, now seen corresponding path program 1 times [2020-11-11 23:43:22,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:43:22,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635477384] [2020-11-11 23:43:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:43:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:43:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:43:22,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635477384] [2020-11-11 23:43:22,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:43:22,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:43:22,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135054487] [2020-11-11 23:43:22,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:43:22,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:43:22,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:43:22,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:43:22,122 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:43:22,190 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-11-11 23:43:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:43:22,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2020-11-11 23:43:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:43:22,192 INFO L225 Difference]: With dead ends: 314 [2020-11-11 23:43:22,192 INFO L226 Difference]: Without dead ends: 182 [2020-11-11 23:43:22,193 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 [2020-11-11 23:43:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-11 23:43:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-11-11 23:43:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.4413793103448276) internal successors, (354), 145 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-11-11 23:43:22,202 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-11-11 23:43:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:43:22,203 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-11-11 23:43:22,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-11-11 23:43:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:43:22,204 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:43:22,204 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:43:22,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:43:22,205 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:43:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:43:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash -461731253, now seen corresponding path program 1 times [2020-11-11 23:43:22,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:43:22,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474431547] [2020-11-11 23:43:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:43:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:43:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:43:22,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474431547] [2020-11-11 23:43:22,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:43:22,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:43:22,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216258992] [2020-11-11 23:43:22,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:43:22,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:43:22,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:43:22,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:43:22,274 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:43:22,280 INFO L93 Difference]: Finished difference Result 138 states and 328 transitions. [2020-11-11 23:43:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:43:22,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2020-11-11 23:43:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:43:22,282 INFO L225 Difference]: With dead ends: 138 [2020-11-11 23:43:22,282 INFO L226 Difference]: Without dead ends: 138 [2020-11-11 23:43:22,283 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:43:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-11 23:43:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-11-11 23:43:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.394160583941606) internal successors, (328), 137 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 328 transitions. [2020-11-11 23:43:22,300 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 328 transitions. Word has length 11 [2020-11-11 23:43:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:43:22,300 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 328 transitions. [2020-11-11 23:43:22,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 328 transitions. [2020-11-11 23:43:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:43:22,302 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:43:22,302 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:43:22,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:43:22,303 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:43:22,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:43:22,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1428769023, now seen corresponding path program 1 times [2020-11-11 23:43:22,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:43:22,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226611511] [2020-11-11 23:43:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:43:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:43:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:43:22,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226611511] [2020-11-11 23:43:22,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:43:22,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:43:22,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358640432] [2020-11-11 23:43:22,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:43:22,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:43:22,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:43:22,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:43:22,384 INFO L87 Difference]: Start difference. First operand 138 states and 328 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:43:22,404 INFO L93 Difference]: Finished difference Result 170 states and 400 transitions. [2020-11-11 23:43:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:43:22,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2020-11-11 23:43:22,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:43:22,406 INFO L225 Difference]: With dead ends: 170 [2020-11-11 23:43:22,406 INFO L226 Difference]: Without dead ends: 80 [2020-11-11 23:43:22,406 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:43:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-11 23:43:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-11 23:43:22,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.278481012658228) internal successors, (180), 79 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-11-11 23:43:22,416 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-11-11 23:43:22,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:43:22,417 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-11-11 23:43:22,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-11-11 23:43:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:43:22,418 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:43:22,418 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:43:22,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:43:22,419 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:43:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:43:22,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1342154406, now seen corresponding path program 1 times [2020-11-11 23:43:22,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:43:22,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069499994] [2020-11-11 23:43:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:43:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:43:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:43:22,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069499994] [2020-11-11 23:43:22,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:43:22,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:43:22,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980564713] [2020-11-11 23:43:22,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:43:22,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:43:22,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:43:22,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:43:22,497 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:43:22,525 INFO L93 Difference]: Finished difference Result 104 states and 232 transitions. [2020-11-11 23:43:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:43:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-11 23:43:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:43:22,526 INFO L225 Difference]: With dead ends: 104 [2020-11-11 23:43:22,526 INFO L226 Difference]: Without dead ends: 68 [2020-11-11 23:43:22,527 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 [2020-11-11 23:43:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-11 23:43:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-11 23:43:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.1492537313432836) internal successors, (144), 67 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-11-11 23:43:22,531 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-11-11 23:43:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:43:22,531 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-11-11 23:43:22,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-11-11 23:43:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:43:22,532 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:43:22,532 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:43:22,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:43:22,533 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:43:22,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:43:22,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1342168356, now seen corresponding path program 2 times [2020-11-11 23:43:22,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:43:22,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016818679] [2020-11-11 23:43:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:43:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:43:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:43:22,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016818679] [2020-11-11 23:43:22,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:43:22,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:43:22,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209853226] [2020-11-11 23:43:22,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:43:22,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:43:22,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:43:22,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:43:22,614 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2020-11-11 23:43:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:43:22,663 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-11-11 23:43:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:43:22,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2020-11-11 23:43:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:43:22,664 INFO L225 Difference]: With dead ends: 81 [2020-11-11 23:43:22,664 INFO L226 Difference]: Without dead ends: 59 [2020-11-11 23:43:22,665 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:43:22,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-11 23:43:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-11 23:43:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.9655172413793103) internal successors, (114), 58 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-11-11 23:43:22,669 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-11-11 23:43:22,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:43:22,670 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-11-11 23:43:22,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2020-11-11 23:43:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-11-11 23:43:22,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:43:22,671 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:43:22,674 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:43:22,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:43:22,674 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:43:22,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:43:22,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1059851046, now seen corresponding path program 1 times [2020-11-11 23:43:22,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:43:22,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692131028] [2020-11-11 23:43:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:43:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:43:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:43:22,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692131028] [2020-11-11 23:43:22,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:43:22,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:43:22,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425792675] [2020-11-11 23:43:22,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:43:22,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:43:22,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:43:22,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:43:22,837 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:43:22,915 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-11-11 23:43:22,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:43:22,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2020-11-11 23:43:22,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:43:22,917 INFO L225 Difference]: With dead ends: 60 [2020-11-11 23:43:22,917 INFO L226 Difference]: Without dead ends: 45 [2020-11-11 23:43:22,917 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:43:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-11 23:43:22,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-11 23:43:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 44 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-11-11 23:43:22,922 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-11-11 23:43:22,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:43:22,922 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-11-11 23:43:22,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:22,922 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-11-11 23:43:22,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 23:43:22,926 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:43:22,926 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:43:22,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 23:43:22,927 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:43:22,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:43:22,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1622838697, now seen corresponding path program 1 times [2020-11-11 23:43:22,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:43:22,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905853851] [2020-11-11 23:43:22,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:43:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:43:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:43:23,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905853851] [2020-11-11 23:43:23,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:43:23,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:43:23,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098146544] [2020-11-11 23:43:23,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:43:23,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:43:23,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:43:23,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:43:23,070 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:23,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:43:23,161 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-11-11 23:43:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:43:23,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2020-11-11 23:43:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:43:23,162 INFO L225 Difference]: With dead ends: 42 [2020-11-11 23:43:23,162 INFO L226 Difference]: Without dead ends: 36 [2020-11-11 23:43:23,163 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:43:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-11 23:43:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-11 23:43:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-11 23:43:23,165 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-11-11 23:43:23,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:43:23,166 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-11 23:43:23,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-11 23:43:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-11 23:43:23,167 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:43:23,167 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:43:23,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 23:43:23,167 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:43:23,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:43:23,168 INFO L82 PathProgramCache]: Analyzing trace with hash 472545507, now seen corresponding path program 1 times [2020-11-11 23:43:23,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:43:23,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887144005] [2020-11-11 23:43:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:43:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:43:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:43:23,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887144005] [2020-11-11 23:43:23,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:43:23,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:43:23,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140809375] [2020-11-11 23:43:23,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:43:23,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:43:23,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:43:23,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:43:23,205 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:43:23,218 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-11 23:43:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:43:23,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2020-11-11 23:43:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:43:23,219 INFO L225 Difference]: With dead ends: 35 [2020-11-11 23:43:23,219 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:43:23,219 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 [2020-11-11 23:43:23,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:43:23,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:43:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:43:23,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-11 23:43:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:43:23,220 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:43:23,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:43:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:43:23,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:43:23,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-11 23:43:23,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:43:23 BasicIcfg [2020-11-11 23:43:23,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:43:23,227 INFO L168 Benchmark]: Toolchain (without parser) took 8675.98 ms. Allocated memory was 302.0 MB in the beginning and 371.2 MB in the end (delta: 69.2 MB). Free memory was 276.1 MB in the beginning and 334.6 MB in the end (delta: -58.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.0 GB. [2020-11-11 23:43:23,227 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:43:23,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.76 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 274.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:43:23,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.21 ms. Allocated memory is still 302.0 MB. Free memory was 274.5 MB in the beginning and 272.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:43:23,230 INFO L168 Benchmark]: Boogie Preprocessor took 63.34 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 271.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:43:23,230 INFO L168 Benchmark]: RCFGBuilder took 678.35 ms. Allocated memory is still 302.0 MB. Free memory was 271.4 MB in the beginning and 248.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:43:23,231 INFO L168 Benchmark]: TraceAbstraction took 7079.17 ms. Allocated memory was 302.0 MB in the beginning and 371.2 MB in the end (delta: 69.2 MB). Free memory was 248.3 MB in the beginning and 334.6 MB in the end (delta: -86.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:43:23,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 270.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 748.76 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 274.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 93.21 ms. Allocated memory is still 302.0 MB. Free memory was 274.5 MB in the beginning and 272.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 63.34 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 271.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 678.35 ms. Allocated memory is still 302.0 MB. Free memory was 271.4 MB in the beginning and 248.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7079.17 ms. Allocated memory was 302.0 MB in the beginning and 371.2 MB in the end (delta: 69.2 MB). Free memory was 248.3 MB in the beginning and 334.6 MB in the end (delta: -86.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 991 VarBasedMoverChecksPositive, 65 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 52 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 69 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.0s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 72 TotalNumberOfCompositions, 2853 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 194 SDtfs, 138 SDslu, 209 SDs, 0 SdLazy, 128 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3914 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...