/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/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 00:12:28,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 00:12:28,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 00:12:28,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 00:12:28,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 00:12:28,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 00:12:28,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 00:12:28,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 00:12:28,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 00:12:28,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 00:12:28,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 00:12:28,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 00:12:28,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 00:12:28,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 00:12:28,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 00:12:28,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 00:12:28,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 00:12:28,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 00:12:28,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 00:12:28,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 00:12:28,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 00:12:28,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 00:12:28,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 00:12:28,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 00:12:28,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 00:12:28,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 00:12:28,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 00:12:28,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 00:12:28,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-11-12 00:12:28,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 00:12:28,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 00:12:28,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 00:12:28,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 00:12:28,939 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 00:12:28,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 00:12:28,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 00:12:28,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 00:12:28,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 00:12:28,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 00:12:28,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 00:12:28,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 00:12:28,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 00:12:28,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 00:12:28,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 00:12:28,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 00:12:28,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 00:12:28,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 00:12:28,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 00:12:28,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 00:12:28,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 00:12:28,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:12:28,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 00:12:28,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 00:12:28,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 00:12:28,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 00:12:28,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 00:12:28,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 00:12:28,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 00:12:29,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 00:12:29,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 00:12:29,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 00:12:29,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 00:12:29,413 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 00:12:29,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-11-12 00:12:29,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e93e66b90/588a267169b9431fa7b433c14bc3db84/FLAGbd7a74e57 [2020-11-12 00:12:30,321 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 00:12:30,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-11-12 00:12:30,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e93e66b90/588a267169b9431fa7b433c14bc3db84/FLAGbd7a74e57 [2020-11-12 00:12:30,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e93e66b90/588a267169b9431fa7b433c14bc3db84 [2020-11-12 00:12:30,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 00:12:30,549 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 00:12:30,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 00:12:30,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 00:12:30,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 00:12:30,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:30" (1/1) ... [2020-11-12 00:12:30,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4c03ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:30, skipping insertion in model container [2020-11-12 00:12:30,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:30" (1/1) ... [2020-11-12 00:12:30,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 00:12:30,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 00:12:31,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:12:31,153 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 00:12:31,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:12:31,425 INFO L208 MainTranslator]: Completed translation [2020-11-12 00:12:31,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31 WrapperNode [2020-11-12 00:12:31,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 00:12:31,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 00:12:31,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 00:12:31,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 00:12:31,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (1/1) ... [2020-11-12 00:12:31,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (1/1) ... [2020-11-12 00:12:31,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 00:12:31,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 00:12:31,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 00:12:31,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 00:12:31,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (1/1) ... [2020-11-12 00:12:31,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (1/1) ... [2020-11-12 00:12:31,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (1/1) ... [2020-11-12 00:12:31,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (1/1) ... [2020-11-12 00:12:31,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (1/1) ... [2020-11-12 00:12:31,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (1/1) ... [2020-11-12 00:12:31,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (1/1) ... [2020-11-12 00:12:31,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 00:12:31,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 00:12:31,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 00:12:31,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 00:12:31,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:12:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 00:12:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 00:12:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 00:12:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 00:12:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 00:12:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 00:12:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 00:12:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 00:12:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 00:12:31,688 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 00:12:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 00:12:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 00:12:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 00:12:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 00:12:31,693 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 00:12:32,208 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 00:12:32,208 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 00:12:32,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:32 BoogieIcfgContainer [2020-11-12 00:12:32,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 00:12:32,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 00:12:32,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 00:12:32,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 00:12:32,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:12:30" (1/3) ... [2020-11-12 00:12:32,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489774cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:32, skipping insertion in model container [2020-11-12 00:12:32,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:31" (2/3) ... [2020-11-12 00:12:32,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489774cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:32, skipping insertion in model container [2020-11-12 00:12:32,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:32" (3/3) ... [2020-11-12 00:12:32,221 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-11-12 00:12:32,239 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 00:12:32,239 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 00:12:32,243 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 00:12:32,244 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 00:12:32,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,278 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,278 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,278 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,278 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,279 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,279 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,281 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,281 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,281 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,282 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,282 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,284 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,284 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,285 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,285 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,285 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,285 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,290 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,290 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,300 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,300 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,301 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,301 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,303 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,303 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,304 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,304 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:12:32,306 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 00:12:32,320 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 00:12:32,345 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 00:12:32,345 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 00:12:32,345 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 00:12:32,345 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 00:12:32,346 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 00:12:32,346 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 00:12:32,346 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 00:12:32,346 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 00:12:32,360 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 00:12:32,363 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-12 00:12:32,366 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-12 00:12:32,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 00:12:32,429 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-12 00:12:32,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-12 00:12:32,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-12 00:12:32,444 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-12 00:12:36,071 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-11-12 00:12:36,558 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-12 00:12:36,683 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-12 00:12:36,914 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-12 00:12:37,030 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-12 00:12:37,322 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-11-12 00:12:37,464 INFO L131 LiptonReduction]: Checked pairs total: 2854 [2020-11-12 00:12:37,464 INFO L133 LiptonReduction]: Total number of compositions: 69 [2020-11-12 00:12:37,471 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-12 00:12:37,501 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) [2020-11-12 00:12:37,505 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) [2020-11-12 00:12:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 00:12:37,512 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:12:37,513 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:12:37,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:12:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:12:37,519 INFO L82 PathProgramCache]: Analyzing trace with hash -475699197, now seen corresponding path program 1 times [2020-11-12 00:12:37,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:12:37,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379188560] [2020-11-12 00:12:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:12:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:12:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:12:37,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379188560] [2020-11-12 00:12:37,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:12:37,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:12:37,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530125226] [2020-11-12 00:12:37,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:12:37,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:12:37,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:12:37,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:12:37,806 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) [2020-11-12 00:12:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:12:37,883 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-11-12 00:12:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:12:37,887 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 [2020-11-12 00:12:37,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:12:37,910 INFO L225 Difference]: With dead ends: 290 [2020-11-12 00:12:37,911 INFO L226 Difference]: Without dead ends: 226 [2020-11-12 00:12:37,913 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:12:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-12 00:12:38,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-12 00:12:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.7822222222222224) internal successors, (626), 225 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-11-12 00:12:38,033 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-11-12 00:12:38,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:12:38,034 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-11-12 00:12:38,034 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) [2020-11-12 00:12:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-11-12 00:12:38,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-12 00:12:38,036 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:12:38,037 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:12:38,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 00:12:38,038 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:12:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:12:38,043 INFO L82 PathProgramCache]: Analyzing trace with hash 545978113, now seen corresponding path program 1 times [2020-11-12 00:12:38,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:12:38,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667107917] [2020-11-12 00:12:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:12:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:12:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:12:38,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667107917] [2020-11-12 00:12:38,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:12:38,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:12:38,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423931356] [2020-11-12 00:12:38,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:12:38,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:12:38,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:12:38,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:12:38,172 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:12:38,184 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-11-12 00:12:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:12:38,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2020-11-12 00:12:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:12:38,191 INFO L225 Difference]: With dead ends: 198 [2020-11-12 00:12:38,192 INFO L226 Difference]: Without dead ends: 198 [2020-11-12 00:12:38,193 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:12:38,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-12 00:12:38,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-11-12 00:12:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.6903553299492384) internal successors, (530), 197 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-11-12 00:12:38,225 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 9 [2020-11-12 00:12:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:12:38,225 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-11-12 00:12:38,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,225 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-11-12 00:12:38,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-12 00:12:38,230 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:12:38,230 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:12:38,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 00:12:38,230 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:12:38,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:12:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 410474733, now seen corresponding path program 1 times [2020-11-12 00:12:38,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:12:38,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136784028] [2020-11-12 00:12:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:12:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:12:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:12:38,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136784028] [2020-11-12 00:12:38,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:12:38,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:12:38,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697058356] [2020-11-12 00:12:38,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:12:38,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:12:38,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:12:38,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:12:38,319 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:12:38,347 INFO L93 Difference]: Finished difference Result 264 states and 697 transitions. [2020-11-12 00:12:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:12:38,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2020-11-12 00:12:38,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:12:38,349 INFO L225 Difference]: With dead ends: 264 [2020-11-12 00:12:38,349 INFO L226 Difference]: Without dead ends: 168 [2020-11-12 00:12:38,350 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:12:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-12 00:12:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-11-12 00:12:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.592814371257485) internal successors, (433), 167 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 433 transitions. [2020-11-12 00:12:38,364 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 433 transitions. Word has length 11 [2020-11-12 00:12:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:12:38,364 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 433 transitions. [2020-11-12 00:12:38,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 433 transitions. [2020-11-12 00:12:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-12 00:12:38,370 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:12:38,370 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:12:38,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 00:12:38,370 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:12:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:12:38,371 INFO L82 PathProgramCache]: Analyzing trace with hash -160161414, now seen corresponding path program 1 times [2020-11-12 00:12:38,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:12:38,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420454954] [2020-11-12 00:12:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:12:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:12:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:12:38,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420454954] [2020-11-12 00:12:38,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:12:38,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:12:38,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923600160] [2020-11-12 00:12:38,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:12:38,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:12:38,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:12:38,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:12:38,429 INFO L87 Difference]: Start difference. First operand 168 states and 433 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:12:38,492 INFO L93 Difference]: Finished difference Result 216 states and 549 transitions. [2020-11-12 00:12:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:12:38,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2020-11-12 00:12:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:12:38,495 INFO L225 Difference]: With dead ends: 216 [2020-11-12 00:12:38,495 INFO L226 Difference]: Without dead ends: 144 [2020-11-12 00:12:38,495 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:12:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-12 00:12:38,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-12 00:12:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.4825174825174825) internal successors, (355), 143 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-12 00:12:38,512 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 12 [2020-11-12 00:12:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:12:38,513 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-12 00:12:38,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-12 00:12:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-12 00:12:38,516 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:12:38,516 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:12:38,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 00:12:38,516 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:12:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:12:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash -160186524, now seen corresponding path program 2 times [2020-11-12 00:12:38,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:12:38,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020244672] [2020-11-12 00:12:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:12:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:12:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:12:38,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020244672] [2020-11-12 00:12:38,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:12:38,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:12:38,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993335594] [2020-11-12 00:12:38,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:12:38,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:12:38,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:12:38,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:12:38,700 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:12:38,748 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-11-12 00:12:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:12:38,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2020-11-12 00:12:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:12:38,750 INFO L225 Difference]: With dead ends: 164 [2020-11-12 00:12:38,751 INFO L226 Difference]: Without dead ends: 124 [2020-11-12 00:12:38,755 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:12:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-12 00:12:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-12 00:12:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.2845528455284554) internal successors, (281), 123 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-11-12 00:12:38,763 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-11-12 00:12:38,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:12:38,763 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-11-12 00:12:38,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,764 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-11-12 00:12:38,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-12 00:12:38,764 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:12:38,765 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:12:38,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 00:12:38,765 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:12:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:12:38,766 INFO L82 PathProgramCache]: Analyzing trace with hash -721700296, now seen corresponding path program 1 times [2020-11-12 00:12:38,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:12:38,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351051224] [2020-11-12 00:12:38,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:12:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:12:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:12:38,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351051224] [2020-11-12 00:12:38,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:12:38,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:12:38,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952338247] [2020-11-12 00:12:38,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:12:38,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:12:38,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:12:38,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:12:38,881 INFO L87 Difference]: Start difference. First operand 124 states and 281 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) [2020-11-12 00:12:38,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:12:38,938 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-11-12 00:12:38,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:12:38,939 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 [2020-11-12 00:12:38,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:12:38,940 INFO L225 Difference]: With dead ends: 122 [2020-11-12 00:12:38,940 INFO L226 Difference]: Without dead ends: 97 [2020-11-12 00:12:38,941 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:12:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-12 00:12:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-12 00:12:38,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 2.1041666666666665) internal successors, (202), 96 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-11-12 00:12:38,945 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-11-12 00:12:38,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:12:38,946 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-11-12 00:12:38,946 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) [2020-11-12 00:12:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-11-12 00:12:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-12 00:12:38,947 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:12:38,947 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:12:38,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 00:12:38,947 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:12:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:12:38,948 INFO L82 PathProgramCache]: Analyzing trace with hash 349416816, now seen corresponding path program 1 times [2020-11-12 00:12:38,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:12:38,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558952303] [2020-11-12 00:12:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:12:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:12:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:12:38,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558952303] [2020-11-12 00:12:38,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:12:38,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:12:38,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717924141] [2020-11-12 00:12:38,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:12:38,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:12:38,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:12:38,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:12:38,981 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:38,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:12:38,993 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-11-12 00:12:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:12:38,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2020-11-12 00:12:38,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:12:38,995 INFO L225 Difference]: With dead ends: 115 [2020-11-12 00:12:38,995 INFO L226 Difference]: Without dead ends: 98 [2020-11-12 00:12:38,996 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:12:38,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-12 00:12:38,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-11-12 00:12:38,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.031578947368421) internal successors, (193), 95 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:39,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-11-12 00:12:39,000 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-11-12 00:12:39,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:12:39,001 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-11-12 00:12:39,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:39,001 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-11-12 00:12:39,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-12 00:12:39,002 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:12:39,002 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:12:39,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 00:12:39,002 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:12:39,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:12:39,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1258451508, now seen corresponding path program 1 times [2020-11-12 00:12:39,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:12:39,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870361648] [2020-11-12 00:12:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:12:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:12:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:12:39,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870361648] [2020-11-12 00:12:39,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:12:39,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 00:12:39,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001560689] [2020-11-12 00:12:39,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 00:12:39,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:12:39,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 00:12:39,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:12:39,116 INFO L87 Difference]: Start difference. First operand 96 states and 193 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) [2020-11-12 00:12:39,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:12:39,179 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-11-12 00:12:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 00:12:39,180 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 [2020-11-12 00:12:39,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:12:39,180 INFO L225 Difference]: With dead ends: 92 [2020-11-12 00:12:39,180 INFO L226 Difference]: Without dead ends: 36 [2020-11-12 00:12:39,181 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:12:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-12 00:12:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-12 00:12:39,182 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) [2020-11-12 00:12:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-12 00:12:39,183 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-11-12 00:12:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:12:39,183 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-12 00:12:39,183 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) [2020-11-12 00:12:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-12 00:12:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-12 00:12:39,184 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:12:39,184 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:12:39,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 00:12:39,184 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:12:39,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:12:39,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2042914000, now seen corresponding path program 1 times [2020-11-12 00:12:39,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:12:39,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459533287] [2020-11-12 00:12:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:12:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:12:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:12:39,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459533287] [2020-11-12 00:12:39,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:12:39,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:12:39,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332439777] [2020-11-12 00:12:39,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:12:39,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:12:39,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:12:39,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:12:39,222 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) [2020-11-12 00:12:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:12:39,271 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-12 00:12:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:12:39,271 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 [2020-11-12 00:12:39,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:12:39,272 INFO L225 Difference]: With dead ends: 35 [2020-11-12 00:12:39,272 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 00:12:39,272 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:12:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 00:12:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 00:12:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:12:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 00:12:39,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-12 00:12:39,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:12:39,274 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 00:12:39,274 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) [2020-11-12 00:12:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 00:12:39,274 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 00:12:39,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 00:12:39,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:12:39 BasicIcfg [2020-11-12 00:12:39,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 00:12:39,280 INFO L168 Benchmark]: Toolchain (without parser) took 8736.06 ms. Allocated memory was 302.0 MB in the beginning and 448.8 MB in the end (delta: 146.8 MB). Free memory was 275.6 MB in the beginning and 424.3 MB in the end (delta: -148.7 MB). Peak memory consumption was 737.9 kB. Max. memory is 16.0 GB. [2020-11-12 00:12:39,281 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:12:39,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 875.80 ms. Allocated memory is still 302.0 MB. Free memory was 274.9 MB in the beginning and 273.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2020-11-12 00:12:39,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.45 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 270.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:12:39,283 INFO L168 Benchmark]: Boogie Preprocessor took 60.28 ms. Allocated memory is still 302.0 MB. Free memory was 270.9 MB in the beginning and 269.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:12:39,284 INFO L168 Benchmark]: RCFGBuilder took 624.03 ms. Allocated memory is still 302.0 MB. Free memory was 269.5 MB in the beginning and 247.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:12:39,285 INFO L168 Benchmark]: TraceAbstraction took 7065.80 ms. Allocated memory was 302.0 MB in the beginning and 448.8 MB in the end (delta: 146.8 MB). Free memory was 247.4 MB in the beginning and 424.3 MB in the end (delta: -176.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:12:39,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 875.80 ms. Allocated memory is still 302.0 MB. Free memory was 274.9 MB in the beginning and 273.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 96.45 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 270.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 60.28 ms. Allocated memory is still 302.0 MB. Free memory was 270.9 MB in the beginning and 269.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 624.03 ms. Allocated memory is still 302.0 MB. Free memory was 269.5 MB in the beginning and 247.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7065.80 ms. Allocated memory was 302.0 MB in the beginning and 448.8 MB in the end (delta: 146.8 MB). Free memory was 247.4 MB in the beginning and 424.3 MB in the end (delta: -176.9 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 980 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 66 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.0s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 69 TotalNumberOfCompositions, 2854 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 177 SDtfs, 121 SDslu, 197 SDs, 0 SdLazy, 114 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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, 3022 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...