/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/safe009_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:47:59,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:47:59,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:47:59,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:47:59,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:47:59,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:47:59,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:47:59,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:47:59,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:47:59,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:47:59,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:47:59,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:47:59,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:47:59,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:47:59,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:47:59,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:47:59,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:47:59,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:47:59,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:47:59,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:47:59,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:47:59,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:47:59,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:47:59,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:47:59,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 23:47:59,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:47:59,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:47:59,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:47:59,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:47:59,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:47:59,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:47:59,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:47:59,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:47:59,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:47:59,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:47:59,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:47:59,311 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 23:47:59,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:47:59,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:47:59,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:47:59,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:47:59,370 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:47:59,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:47:59,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:47:59,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:47:59,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:47:59,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:47:59,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:47:59,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:47:59,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:47:59,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:47:59,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:47:59,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:47:59,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:47:59,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:47:59,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:47:59,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:47:59,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:47:59,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:47:59,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:47:59,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:47:59,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:47:59,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:47:59,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:47:59,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:47:59,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:47:59,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:47:59,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:47:59,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:47:59,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:47:59,819 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:47:59,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-11-11 23:47:59,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f849f878/2b2116bd334e49088812124d7ed89ad8/FLAG4f5d1d64a [2020-11-11 23:48:00,584 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:48:00,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-11-11 23:48:00,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f849f878/2b2116bd334e49088812124d7ed89ad8/FLAG4f5d1d64a [2020-11-11 23:48:00,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f849f878/2b2116bd334e49088812124d7ed89ad8 [2020-11-11 23:48:00,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:48:00,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:48:00,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:48:00,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:48:00,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:48:00,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:48:00" (1/1) ... [2020-11-11 23:48:00,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf3842e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:00, skipping insertion in model container [2020-11-11 23:48:00,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:48:00" (1/1) ... [2020-11-11 23:48:00,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:48:00,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:48:01,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:48:01,290 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:48:01,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:48:01,454 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:48:01,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01 WrapperNode [2020-11-11 23:48:01,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:48:01,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:48:01,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:48:01,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:48:01,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (1/1) ... [2020-11-11 23:48:01,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (1/1) ... [2020-11-11 23:48:01,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:48:01,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:48:01,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:48:01,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:48:01,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (1/1) ... [2020-11-11 23:48:01,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (1/1) ... [2020-11-11 23:48:01,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (1/1) ... [2020-11-11 23:48:01,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (1/1) ... [2020-11-11 23:48:01,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (1/1) ... [2020-11-11 23:48:01,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (1/1) ... [2020-11-11 23:48:01,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (1/1) ... [2020-11-11 23:48:01,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:48:01,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:48:01,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:48:01,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:48:01,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (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 23:48:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:48:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:48:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:48:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:48:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:48:01,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:48:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:48:01,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:48:01,628 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:48:01,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:48:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:48:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:48:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:48:01,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:48:01,633 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 23:48:02,092 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:48:02,092 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:48:02,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:48:02 BoogieIcfgContainer [2020-11-11 23:48:02,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:48:02,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:48:02,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:48:02,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:48:02,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:48:00" (1/3) ... [2020-11-11 23:48:02,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a261b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:48:02, skipping insertion in model container [2020-11-11 23:48:02,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:48:01" (2/3) ... [2020-11-11 23:48:02,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a261b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:48:02, skipping insertion in model container [2020-11-11 23:48:02,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:48:02" (3/3) ... [2020-11-11 23:48:02,103 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2020-11-11 23:48:02,119 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:48:02,119 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:48:02,123 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:48:02,124 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:48:02,155 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,156 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,156 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,156 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,156 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,157 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,157 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,157 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,158 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,158 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,158 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,158 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,159 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,159 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,159 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,159 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,159 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,160 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,160 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,160 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,160 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,161 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,161 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,161 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,161 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,162 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,162 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,162 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,162 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,162 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,163 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,163 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,163 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,163 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,164 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,164 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,166 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,167 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,167 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,167 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,173 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,173 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,173 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,174 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,176 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,176 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,176 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:48:02,180 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:48:02,191 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:48:02,215 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:48:02,216 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:48:02,216 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:48:02,216 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:48:02,216 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:48:02,216 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:48:02,216 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:48:02,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:48:02,229 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:48:02,231 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-11 23:48:02,234 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-11 23:48:02,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-11 23:48:02,282 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-11 23:48:02,283 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:48:02,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-11 23:48:02,290 INFO L116 LiptonReduction]: Number of co-enabled transitions 1356 [2020-11-11 23:48:04,627 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-11-11 23:48:05,985 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-11 23:48:06,100 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-11 23:48:06,352 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-11 23:48:06,486 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-11 23:48:06,532 INFO L131 LiptonReduction]: Checked pairs total: 2390 [2020-11-11 23:48:06,532 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-11 23:48:06,544 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-11 23:48:06,585 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 282 states, 280 states have (on average 3.057142857142857) internal successors, (856), 281 states have internal predecessors, (856), 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 23:48:06,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 280 states have (on average 3.057142857142857) internal successors, (856), 281 states have internal predecessors, (856), 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 23:48:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:48:06,597 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:48:06,597 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:48:06,598 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:48:06,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:48:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash -817412520, now seen corresponding path program 1 times [2020-11-11 23:48:06,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:48:06,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299492771] [2020-11-11 23:48:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:48:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:48:06,849 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 23:48:06,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299492771] [2020-11-11 23:48:06,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:48:06,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:48:06,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492956467] [2020-11-11 23:48:06,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-11 23:48:06,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:48:06,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-11 23:48:06,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:48:06,875 INFO L87 Difference]: Start difference. First operand has 282 states, 280 states have (on average 3.057142857142857) internal successors, (856), 281 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:48:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:48:06,904 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-11 23:48:06,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-11 23:48:06,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2020-11-11 23:48:06,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:48:06,921 INFO L225 Difference]: With dead ends: 282 [2020-11-11 23:48:06,921 INFO L226 Difference]: Without dead ends: 234 [2020-11-11 23:48:06,922 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:48:06,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-11 23:48:06,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-11-11 23:48:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:48:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-11-11 23:48:07,000 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-11-11 23:48:07,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:48:07,001 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-11-11 23:48:07,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:48:07,002 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-11-11 23:48:07,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:48:07,005 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:48:07,005 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:48:07,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:48:07,006 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:48:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:48:07,010 INFO L82 PathProgramCache]: Analyzing trace with hash 429981582, now seen corresponding path program 1 times [2020-11-11 23:48:07,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:48:07,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944813227] [2020-11-11 23:48:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:48:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:48:07,162 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 23:48:07,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944813227] [2020-11-11 23:48:07,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:48:07,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:48:07,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183828244] [2020-11-11 23:48:07,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:48:07,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:48:07,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:48:07,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:48:07,166 INFO L87 Difference]: Start difference. First operand 234 states and 656 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 23:48:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:48:07,197 INFO L93 Difference]: Finished difference Result 258 states and 690 transitions. [2020-11-11 23:48:07,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:48:07,198 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 23:48:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:48:07,201 INFO L225 Difference]: With dead ends: 258 [2020-11-11 23:48:07,201 INFO L226 Difference]: Without dead ends: 210 [2020-11-11 23:48:07,202 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 23:48:07,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-11-11 23:48:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-11-11 23:48:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.7464114832535884) internal successors, (574), 209 states have internal predecessors, (574), 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 23:48:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 574 transitions. [2020-11-11 23:48:07,235 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 574 transitions. Word has length 9 [2020-11-11 23:48:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:48:07,236 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 574 transitions. [2020-11-11 23:48:07,236 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 23:48:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 574 transitions. [2020-11-11 23:48:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-11 23:48:07,237 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:48:07,237 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:48:07,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:48:07,238 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:48:07,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:48:07,239 INFO L82 PathProgramCache]: Analyzing trace with hash -55939021, now seen corresponding path program 1 times [2020-11-11 23:48:07,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:48:07,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067833968] [2020-11-11 23:48:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:48:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:48:07,340 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 23:48:07,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067833968] [2020-11-11 23:48:07,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:48:07,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:48:07,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667547839] [2020-11-11 23:48:07,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:48:07,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:48:07,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:48:07,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:48:07,342 INFO L87 Difference]: Start difference. First operand 210 states and 574 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 23:48:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:48:07,467 INFO L93 Difference]: Finished difference Result 282 states and 733 transitions. [2020-11-11 23:48:07,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-11 23:48:07,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 23:48:07,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:48:07,470 INFO L225 Difference]: With dead ends: 282 [2020-11-11 23:48:07,470 INFO L226 Difference]: Without dead ends: 150 [2020-11-11 23:48:07,471 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-11 23:48:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-11 23:48:07,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-11-11 23:48:07,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.4563758389261743) internal successors, (366), 149 states have internal predecessors, (366), 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 23:48:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2020-11-11 23:48:07,481 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 10 [2020-11-11 23:48:07,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:48:07,481 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2020-11-11 23:48:07,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 23:48:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2020-11-11 23:48:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:48:07,483 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:48:07,484 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:48:07,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:48:07,484 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:48:07,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:48:07,485 INFO L82 PathProgramCache]: Analyzing trace with hash -220388368, now seen corresponding path program 1 times [2020-11-11 23:48:07,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:48:07,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483759816] [2020-11-11 23:48:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:48:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:48:07,589 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 23:48:07,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483759816] [2020-11-11 23:48:07,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:48:07,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:48:07,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613683186] [2020-11-11 23:48:07,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:48:07,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:48:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:48:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:48:07,595 INFO L87 Difference]: Start difference. First operand 150 states and 366 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:48:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:48:07,666 INFO L93 Difference]: Finished difference Result 207 states and 486 transitions. [2020-11-11 23:48:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:48:07,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2020-11-11 23:48:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:48:07,667 INFO L225 Difference]: With dead ends: 207 [2020-11-11 23:48:07,668 INFO L226 Difference]: Without dead ends: 90 [2020-11-11 23:48:07,668 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-11 23:48:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-11 23:48:07,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-11-11 23:48:07,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.3258426966292136) internal successors, (207), 89 states have internal predecessors, (207), 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 23:48:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 207 transitions. [2020-11-11 23:48:07,683 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 207 transitions. Word has length 12 [2020-11-11 23:48:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:48:07,684 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 207 transitions. [2020-11-11 23:48:07,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:48:07,684 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 207 transitions. [2020-11-11 23:48:07,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:48:07,685 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:48:07,685 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:48:07,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:48:07,686 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:48:07,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:48:07,689 INFO L82 PathProgramCache]: Analyzing trace with hash 459993904, now seen corresponding path program 1 times [2020-11-11 23:48:07,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:48:07,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578685860] [2020-11-11 23:48:07,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:48:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:48:07,809 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 23:48:07,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578685860] [2020-11-11 23:48:07,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:48:07,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:48:07,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894453754] [2020-11-11 23:48:07,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:48:07,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:48:07,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:48:07,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:48:07,812 INFO L87 Difference]: Start difference. First operand 90 states and 207 transitions. Second operand has 4 states, 4 states have (on average 3.25) 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 23:48:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:48:07,847 INFO L93 Difference]: Finished difference Result 107 states and 224 transitions. [2020-11-11 23:48:07,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:48:07,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) 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 23:48:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:48:07,849 INFO L225 Difference]: With dead ends: 107 [2020-11-11 23:48:07,849 INFO L226 Difference]: Without dead ends: 80 [2020-11-11 23:48:07,850 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 23:48:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-11 23:48:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-11 23:48:07,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.1645569620253164) internal successors, (171), 79 states have internal predecessors, (171), 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 23:48:07,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 171 transitions. [2020-11-11 23:48:07,856 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 171 transitions. Word has length 13 [2020-11-11 23:48:07,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:48:07,856 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 171 transitions. [2020-11-11 23:48:07,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.25) 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 23:48:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 171 transitions. [2020-11-11 23:48:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:48:07,858 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:48:07,858 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:48:07,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:48:07,858 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:48:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:48:07,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1580181975, now seen corresponding path program 1 times [2020-11-11 23:48:07,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:48:07,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777831012] [2020-11-11 23:48:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:48:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:48:07,948 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 23:48:07,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777831012] [2020-11-11 23:48:07,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:48:07,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:48:07,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145415808] [2020-11-11 23:48:07,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:48:07,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:48:07,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:48:07,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:48:07,952 INFO L87 Difference]: Start difference. First operand 80 states and 171 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:48:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:48:07,998 INFO L93 Difference]: Finished difference Result 95 states and 196 transitions. [2020-11-11 23:48:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:48:07,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-11 23:48:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:48:08,000 INFO L225 Difference]: With dead ends: 95 [2020-11-11 23:48:08,000 INFO L226 Difference]: Without dead ends: 62 [2020-11-11 23:48:08,001 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-11 23:48:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-11 23:48:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-11 23:48:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 61 states have internal predecessors, (125), 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 23:48:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 125 transitions. [2020-11-11 23:48:08,005 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 125 transitions. Word has length 13 [2020-11-11 23:48:08,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:48:08,006 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 125 transitions. [2020-11-11 23:48:08,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:48:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 125 transitions. [2020-11-11 23:48:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:48:08,007 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:48:08,007 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:48:08,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:48:08,007 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:48:08,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:48:08,008 INFO L82 PathProgramCache]: Analyzing trace with hash 933092355, now seen corresponding path program 1 times [2020-11-11 23:48:08,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:48:08,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018440356] [2020-11-11 23:48:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:48:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:48:08,074 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 23:48:08,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018440356] [2020-11-11 23:48:08,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:48:08,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:48:08,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613701339] [2020-11-11 23:48:08,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:48:08,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:48:08,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:48:08,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:48:08,077 INFO L87 Difference]: Start difference. First operand 62 states and 125 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:48:08,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:48:08,118 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-11-11 23:48:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:48:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2020-11-11 23:48:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:48:08,121 INFO L225 Difference]: With dead ends: 58 [2020-11-11 23:48:08,121 INFO L226 Difference]: Without dead ends: 43 [2020-11-11 23:48:08,122 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:48:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-11 23:48:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-11 23:48:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 42 states have internal predecessors, (70), 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 23:48:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 70 transitions. [2020-11-11 23:48:08,126 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 70 transitions. Word has length 14 [2020-11-11 23:48:08,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:48:08,126 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 70 transitions. [2020-11-11 23:48:08,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:48:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 70 transitions. [2020-11-11 23:48:08,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 23:48:08,127 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:48:08,127 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:48:08,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:48:08,130 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:48:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:48:08,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1136859654, now seen corresponding path program 1 times [2020-11-11 23:48:08,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:48:08,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451759194] [2020-11-11 23:48:08,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:48:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:48:08,220 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 23:48:08,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451759194] [2020-11-11 23:48:08,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:48:08,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-11 23:48:08,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46840642] [2020-11-11 23:48:08,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:48:08,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:48:08,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:48:08,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:48:08,223 INFO L87 Difference]: Start difference. First operand 43 states and 70 transitions. Second operand has 6 states, 6 states have (on average 2.5) 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 23:48:08,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:48:08,290 INFO L93 Difference]: Finished difference Result 36 states and 54 transitions. [2020-11-11 23:48:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:48:08,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) 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 23:48:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:48:08,291 INFO L225 Difference]: With dead ends: 36 [2020-11-11 23:48:08,291 INFO L226 Difference]: Without dead ends: 30 [2020-11-11 23:48:08,292 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-11 23:48:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-11 23:48:08,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-11 23:48:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 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 23:48:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-11-11 23:48:08,294 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 15 [2020-11-11 23:48:08,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:48:08,294 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-11 23:48:08,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) 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 23:48:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-11-11 23:48:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-11 23:48:08,295 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:48:08,295 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 23:48:08,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 23:48:08,295 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:48:08,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:48:08,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1240949739, now seen corresponding path program 1 times [2020-11-11 23:48:08,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:48:08,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141111392] [2020-11-11 23:48:08,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:48:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:48:08,336 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 23:48:08,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141111392] [2020-11-11 23:48:08,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:48:08,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:48:08,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19888714] [2020-11-11 23:48:08,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:48:08,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:48:08,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:48:08,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:48:08,339 INFO L87 Difference]: Start difference. First operand 30 states and 44 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 23:48:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:48:08,353 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-11-11 23:48:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:48:08,353 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 23:48:08,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:48:08,353 INFO L225 Difference]: With dead ends: 29 [2020-11-11 23:48:08,353 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:48:08,354 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 23:48:08,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:48:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:48:08,355 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 23:48:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:48:08,355 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-11 23:48:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:48:08,356 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:48:08,356 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 23:48:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:48:08,356 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:48:08,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 23:48:08,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:48:08 BasicIcfg [2020-11-11 23:48:08,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:48:08,361 INFO L168 Benchmark]: Toolchain (without parser) took 7544.28 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 276.0 MB in the beginning and 196.7 MB in the end (delta: 79.3 MB). Peak memory consumption was 142.2 MB. Max. memory is 16.0 GB. [2020-11-11 23:48:08,362 INFO L168 Benchmark]: CDTParser took 2.69 ms. Allocated memory is still 302.0 MB. Free memory is still 287.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:48:08,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.46 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 275.9 MB in the end (delta: -544.1 kB). Peak memory consumption was 31.0 MB. Max. memory is 16.0 GB. [2020-11-11 23:48:08,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.89 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 273.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:48:08,364 INFO L168 Benchmark]: Boogie Preprocessor took 27.81 ms. Allocated memory is still 302.0 MB. Free memory was 273.8 MB in the beginning and 272.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:48:08,365 INFO L168 Benchmark]: RCFGBuilder took 558.74 ms. Allocated memory is still 302.0 MB. Free memory was 272.5 MB in the beginning and 250.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-11 23:48:08,366 INFO L168 Benchmark]: TraceAbstraction took 6263.45 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 250.2 MB in the beginning and 196.7 MB in the end (delta: 53.5 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.0 GB. [2020-11-11 23:48:08,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.69 ms. Allocated memory is still 302.0 MB. Free memory is still 287.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 630.46 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 275.9 MB in the end (delta: -544.1 kB). Peak memory consumption was 31.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.89 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 273.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.81 ms. Allocated memory is still 302.0 MB. Free memory was 273.8 MB in the beginning and 272.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 558.74 ms. Allocated memory is still 302.0 MB. Free memory was 272.5 MB in the beginning and 250.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6263.45 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 250.2 MB in the beginning and 196.7 MB in the end (delta: 53.5 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 942 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 63 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.2s, 84 PlacesBefore, 31 PlacesAfterwards, 77 TransitionsBefore, 22 TransitionsAfterwards, 1356 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2390 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 157 SDtfs, 211 SDslu, 219 SDs, 0 SdLazy, 117 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...