./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 882ea361b7af061cd8d42e5cfb7b075ce7064afa ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:27:44,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:27:44,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:27:44,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:27:44,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:27:44,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:27:44,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:27:44,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:27:44,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:27:44,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:27:44,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:27:44,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:27:44,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:27:44,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:27:44,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:27:44,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:27:44,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:27:44,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:27:44,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:27:44,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:27:44,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:27:44,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:27:44,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:27:44,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:27:44,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:27:44,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:27:44,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:27:44,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:27:44,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:27:44,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:27:44,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:27:44,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:27:44,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:27:44,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:27:44,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:27:44,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:27:44,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:27:44,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:27:44,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:27:44,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:27:44,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:27:44,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:27:44,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:27:44,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:27:44,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:27:44,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:27:44,870 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:27:44,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:27:44,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:27:44,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:27:44,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:27:44,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:27:44,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:27:44,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:27:44,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:27:44,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:27:44,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:27:44,873 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:27:44,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:27:44,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:27:44,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:27:44,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:27:44,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:27:44,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:27:44,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:27:44,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:27:44,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:27:44,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:27:44,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:27:44,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:27:44,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:27:44,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 882ea361b7af061cd8d42e5cfb7b075ce7064afa [2020-10-26 00:27:45,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:27:45,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:27:45,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:27:45,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:27:45,307 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:27:45,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2020-10-26 00:27:45,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8c57abac/6e558a7951854108a1b4620cfda65e30/FLAG9798e555c [2020-10-26 00:27:46,196 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:27:46,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2020-10-26 00:27:46,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8c57abac/6e558a7951854108a1b4620cfda65e30/FLAG9798e555c [2020-10-26 00:27:46,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8c57abac/6e558a7951854108a1b4620cfda65e30 [2020-10-26 00:27:46,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:27:46,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:27:46,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:27:46,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:27:46,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:27:46,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:27:46" (1/1) ... [2020-10-26 00:27:46,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2800ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:46, skipping insertion in model container [2020-10-26 00:27:46,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:27:46" (1/1) ... [2020-10-26 00:27:46,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:27:46,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:27:46,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:27:46,961 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:27:47,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:27:47,173 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:27:47,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47 WrapperNode [2020-10-26 00:27:47,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:27:47,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:27:47,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:27:47,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:27:47,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (1/1) ... [2020-10-26 00:27:47,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (1/1) ... [2020-10-26 00:27:47,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:27:47,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:27:47,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:27:47,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:27:47,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (1/1) ... [2020-10-26 00:27:47,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (1/1) ... [2020-10-26 00:27:47,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (1/1) ... [2020-10-26 00:27:47,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (1/1) ... [2020-10-26 00:27:47,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (1/1) ... [2020-10-26 00:27:47,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (1/1) ... [2020-10-26 00:27:47,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (1/1) ... [2020-10-26 00:27:47,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:27:47,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:27:47,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:27:47,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:27:47,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (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 [2020-10-26 00:27:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:27:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:27:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:27:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:27:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:27:47,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:27:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:27:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:27:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:27:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:27:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:27:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:27:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:27:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:27:47,414 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:27:47,991 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:27:47,991 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:27:47,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:27:47 BoogieIcfgContainer [2020-10-26 00:27:47,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:27:47,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:27:47,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:27:47,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:27:48,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:27:46" (1/3) ... [2020-10-26 00:27:48,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1284ba94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:27:48, skipping insertion in model container [2020-10-26 00:27:48,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:27:47" (2/3) ... [2020-10-26 00:27:48,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1284ba94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:27:48, skipping insertion in model container [2020-10-26 00:27:48,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:27:47" (3/3) ... [2020-10-26 00:27:48,003 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-10-26 00:27:48,018 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:27:48,018 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:27:48,025 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:27:48,026 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:27:48,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,066 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,066 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,067 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,067 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,068 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,068 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,070 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,073 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,073 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,080 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,080 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,081 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,081 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,085 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,085 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:27:48,088 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:27:48,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:27:48,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:27:48,129 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:27:48,129 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:27:48,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:27:48,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:27:48,130 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:27:48,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:27:48,130 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:27:48,144 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:27:48,147 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-26 00:27:48,151 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-26 00:27:48,153 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-26 00:27:48,229 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-26 00:27:48,229 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:27:48,240 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-26 00:27:48,245 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-26 00:27:49,442 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-26 00:27:50,775 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-26 00:27:50,896 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 00:27:50,911 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-10-26 00:27:50,911 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-10-26 00:27:50,921 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-26 00:27:50,971 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-26 00:27:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-26 00:27:50,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:27:50,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:50,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:50,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:50,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:50,986 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-10-26 00:27:50,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:50,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047981051] [2020-10-26 00:27:50,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:51,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047981051] [2020-10-26 00:27:51,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:51,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:27:51,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124100912] [2020-10-26 00:27:51,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:27:51,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:51,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:27:51,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:27:51,271 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-26 00:27:51,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:51,310 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-26 00:27:51,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:27:51,312 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-26 00:27:51,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:51,331 INFO L225 Difference]: With dead ends: 362 [2020-10-26 00:27:51,331 INFO L226 Difference]: Without dead ends: 298 [2020-10-26 00:27:51,333 INFO L677 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 [2020-10-26 00:27:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-26 00:27:51,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-26 00:27:51,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-26 00:27:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-26 00:27:51,416 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-26 00:27:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:51,417 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-26 00:27:51,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:27:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-26 00:27:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:27:51,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:51,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:51,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:27:51,420 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-10-26 00:27:51,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:51,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102188705] [2020-10-26 00:27:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:51,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102188705] [2020-10-26 00:27:51,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:51,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:27:51,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514581790] [2020-10-26 00:27:51,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:27:51,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:51,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:27:51,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:27:51,607 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-10-26 00:27:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:51,725 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-26 00:27:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:27:51,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-26 00:27:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:51,730 INFO L225 Difference]: With dead ends: 330 [2020-10-26 00:27:51,733 INFO L226 Difference]: Without dead ends: 266 [2020-10-26 00:27:51,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:27:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-26 00:27:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-26 00:27:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-26 00:27:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-26 00:27:51,791 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-26 00:27:51,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:51,792 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-26 00:27:51,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:27:51,793 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-26 00:27:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:27:51,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:51,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:51,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:27:51,797 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:51,798 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-10-26 00:27:51,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:51,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890452776] [2020-10-26 00:27:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:51,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890452776] [2020-10-26 00:27:51,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:51,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:27:51,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359836174] [2020-10-26 00:27:51,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:27:51,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:51,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:27:51,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:27:51,941 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-10-26 00:27:52,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:52,059 INFO L93 Difference]: Finished difference Result 338 states and 914 transitions. [2020-10-26 00:27:52,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 00:27:52,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 00:27:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:52,062 INFO L225 Difference]: With dead ends: 338 [2020-10-26 00:27:52,063 INFO L226 Difference]: Without dead ends: 194 [2020-10-26 00:27:52,063 INFO L677 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 [2020-10-26 00:27:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-26 00:27:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-26 00:27:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-26 00:27:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 494 transitions. [2020-10-26 00:27:52,076 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 494 transitions. Word has length 10 [2020-10-26 00:27:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:52,077 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 494 transitions. [2020-10-26 00:27:52,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:27:52,077 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 494 transitions. [2020-10-26 00:27:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:27:52,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:52,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:52,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:27:52,081 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:52,084 INFO L82 PathProgramCache]: Analyzing trace with hash 150494398, now seen corresponding path program 1 times [2020-10-26 00:27:52,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:52,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111291144] [2020-10-26 00:27:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:52,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:52,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111291144] [2020-10-26 00:27:52,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:52,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:27:52,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040652966] [2020-10-26 00:27:52,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:27:52,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:52,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:27:52,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:27:52,216 INFO L87 Difference]: Start difference. First operand 194 states and 494 transitions. Second operand 4 states. [2020-10-26 00:27:52,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:52,246 INFO L93 Difference]: Finished difference Result 206 states and 508 transitions. [2020-10-26 00:27:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:27:52,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 00:27:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:52,248 INFO L225 Difference]: With dead ends: 206 [2020-10-26 00:27:52,248 INFO L226 Difference]: Without dead ends: 182 [2020-10-26 00:27:52,249 INFO L677 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 [2020-10-26 00:27:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-26 00:27:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-10-26 00:27:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-26 00:27:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 456 transitions. [2020-10-26 00:27:52,264 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 456 transitions. Word has length 12 [2020-10-26 00:27:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:52,264 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 456 transitions. [2020-10-26 00:27:52,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:27:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 456 transitions. [2020-10-26 00:27:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:27:52,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:52,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:52,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:27:52,275 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:52,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:52,275 INFO L82 PathProgramCache]: Analyzing trace with hash -10402391, now seen corresponding path program 1 times [2020-10-26 00:27:52,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:52,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837412123] [2020-10-26 00:27:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:52,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837412123] [2020-10-26 00:27:52,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:52,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:27:52,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574575055] [2020-10-26 00:27:52,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:27:52,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:52,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:27:52,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:27:52,391 INFO L87 Difference]: Start difference. First operand 182 states and 456 transitions. Second operand 5 states. [2020-10-26 00:27:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:52,461 INFO L93 Difference]: Finished difference Result 194 states and 473 transitions. [2020-10-26 00:27:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:27:52,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-26 00:27:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:52,468 INFO L225 Difference]: With dead ends: 194 [2020-10-26 00:27:52,468 INFO L226 Difference]: Without dead ends: 158 [2020-10-26 00:27:52,469 INFO L677 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 [2020-10-26 00:27:52,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-26 00:27:52,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-26 00:27:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-26 00:27:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 394 transitions. [2020-10-26 00:27:52,477 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 394 transitions. Word has length 13 [2020-10-26 00:27:52,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:52,477 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 394 transitions. [2020-10-26 00:27:52,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:27:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 394 transitions. [2020-10-26 00:27:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:27:52,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:52,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:52,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:27:52,480 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:52,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1736979236, now seen corresponding path program 1 times [2020-10-26 00:27:52,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:52,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835834389] [2020-10-26 00:27:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:52,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835834389] [2020-10-26 00:27:52,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:52,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:27:52,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742271045] [2020-10-26 00:27:52,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:27:52,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:52,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:27:52,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:27:52,575 INFO L87 Difference]: Start difference. First operand 158 states and 394 transitions. Second operand 5 states. [2020-10-26 00:27:52,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:52,624 INFO L93 Difference]: Finished difference Result 236 states and 587 transitions. [2020-10-26 00:27:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:27:52,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-26 00:27:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:52,627 INFO L225 Difference]: With dead ends: 236 [2020-10-26 00:27:52,627 INFO L226 Difference]: Without dead ends: 128 [2020-10-26 00:27:52,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:27:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-26 00:27:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-26 00:27:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-26 00:27:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-10-26 00:27:52,634 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-10-26 00:27:52,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:52,634 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-10-26 00:27:52,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:27:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-10-26 00:27:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:27:52,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:52,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:52,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:27:52,636 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:52,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:52,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1184784502, now seen corresponding path program 2 times [2020-10-26 00:27:52,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:52,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954667691] [2020-10-26 00:27:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:52,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954667691] [2020-10-26 00:27:52,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:52,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:27:52,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451172060] [2020-10-26 00:27:52,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:27:52,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:52,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:27:52,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:27:52,717 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 5 states. [2020-10-26 00:27:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:52,771 INFO L93 Difference]: Finished difference Result 158 states and 381 transitions. [2020-10-26 00:27:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:27:52,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-26 00:27:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:52,772 INFO L225 Difference]: With dead ends: 158 [2020-10-26 00:27:52,772 INFO L226 Difference]: Without dead ends: 80 [2020-10-26 00:27:52,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:27:52,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-26 00:27:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-26 00:27:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-26 00:27:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-10-26 00:27:52,777 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 13 [2020-10-26 00:27:52,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:52,778 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-10-26 00:27:52,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:27:52,778 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-10-26 00:27:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:27:52,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:52,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:52,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:27:52,779 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:52,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-10-26 00:27:52,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:52,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848156455] [2020-10-26 00:27:52,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:52,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848156455] [2020-10-26 00:27:52,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:52,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:27:52,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744752670] [2020-10-26 00:27:52,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:27:52,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:52,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:27:52,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:27:52,862 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-10-26 00:27:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:52,893 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-10-26 00:27:52,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:27:52,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-26 00:27:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:52,894 INFO L225 Difference]: With dead ends: 91 [2020-10-26 00:27:52,895 INFO L226 Difference]: Without dead ends: 69 [2020-10-26 00:27:52,895 INFO L677 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 [2020-10-26 00:27:52,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-26 00:27:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-26 00:27:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-26 00:27:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-10-26 00:27:52,903 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-10-26 00:27:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:52,904 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-10-26 00:27:52,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:27:52,904 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-10-26 00:27:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:27:52,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:52,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:52,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:27:52,905 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:52,905 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-10-26 00:27:52,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:52,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844672604] [2020-10-26 00:27:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:52,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844672604] [2020-10-26 00:27:52,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:52,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:27:52,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935239577] [2020-10-26 00:27:52,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:27:52,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:52,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:27:52,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:27:52,993 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-10-26 00:27:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:53,040 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-10-26 00:27:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:27:53,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-26 00:27:53,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:53,041 INFO L225 Difference]: With dead ends: 65 [2020-10-26 00:27:53,041 INFO L226 Difference]: Without dead ends: 50 [2020-10-26 00:27:53,042 INFO L677 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 [2020-10-26 00:27:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-26 00:27:53,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-26 00:27:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-26 00:27:53,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-10-26 00:27:53,045 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-10-26 00:27:53,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:53,045 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-10-26 00:27:53,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:27:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-10-26 00:27:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 00:27:53,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:53,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:53,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 00:27:53,047 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:53,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-10-26 00:27:53,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:53,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778493560] [2020-10-26 00:27:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:53,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778493560] [2020-10-26 00:27:53,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:53,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:27:53,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710421639] [2020-10-26 00:27:53,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:27:53,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:53,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:27:53,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:27:53,145 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-10-26 00:27:53,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:53,213 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-10-26 00:27:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:27:53,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-26 00:27:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:53,214 INFO L225 Difference]: With dead ends: 43 [2020-10-26 00:27:53,214 INFO L226 Difference]: Without dead ends: 37 [2020-10-26 00:27:53,215 INFO L677 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 [2020-10-26 00:27:53,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-26 00:27:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-26 00:27:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 00:27:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-10-26 00:27:53,217 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-10-26 00:27:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:53,221 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-10-26 00:27:53,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:27:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-10-26 00:27:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:27:53,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:27:53,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:27:53,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 00:27:53,222 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:27:53,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:27:53,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-10-26 00:27:53,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:27:53,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56710095] [2020-10-26 00:27:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:27:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:27:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:27:53,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56710095] [2020-10-26 00:27:53,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:27:53,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:27:53,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941741231] [2020-10-26 00:27:53,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:27:53,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:27:53,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:27:53,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:27:53,294 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-10-26 00:27:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:27:53,323 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-10-26 00:27:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:27:53,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-26 00:27:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:27:53,324 INFO L225 Difference]: With dead ends: 36 [2020-10-26 00:27:53,325 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:27:53,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:27:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:27:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:27:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:27:53,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:27:53,326 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-26 00:27:53,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:27:53,326 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:27:53,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:27:53,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:27:53,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:27:53,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 00:27:53,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:27:53 BasicIcfg [2020-10-26 00:27:53,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:27:53,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:27:53,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:27:53,334 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:27:53,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:27:47" (3/4) ... [2020-10-26 00:27:53,339 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:27:53,347 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:27:53,348 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:27:53,348 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:27:53,355 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:27:53,355 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:27:53,355 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:27:53,356 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:27:53,433 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:27:53,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:27:53,435 INFO L168 Benchmark]: Toolchain (without parser) took 7036.97 ms. Allocated memory was 52.4 MB in the beginning and 121.6 MB in the end (delta: 69.2 MB). Free memory was 37.5 MB in the beginning and 67.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:53,436 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 39.8 MB. Free memory was 19.6 MB in the beginning and 19.6 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:27:53,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.94 ms. Allocated memory is still 52.4 MB. Free memory was 36.9 MB in the beginning and 28.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:53,438 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.69 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 27.1 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:27:53,441 INFO L168 Benchmark]: Boogie Preprocessor took 44.49 ms. Allocated memory is still 52.4 MB. Free memory was 27.0 MB in the beginning and 25.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:53,444 INFO L168 Benchmark]: RCFGBuilder took 684.06 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 38.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:53,445 INFO L168 Benchmark]: TraceAbstraction took 5337.58 ms. Allocated memory was 62.9 MB in the beginning and 121.6 MB in the end (delta: 58.7 MB). Free memory was 37.7 MB in the beginning and 70.0 MB in the end (delta: -32.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:53,447 INFO L168 Benchmark]: Witness Printer took 100.00 ms. Allocated memory is still 121.6 MB. Free memory was 70.0 MB in the beginning and 67.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:27:53,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 39.8 MB. Free memory was 19.6 MB in the beginning and 19.6 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 739.94 ms. Allocated memory is still 52.4 MB. Free memory was 36.9 MB in the beginning and 28.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.69 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 27.1 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.49 ms. Allocated memory is still 52.4 MB. Free memory was 27.0 MB in the beginning and 25.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 684.06 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 38.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5337.58 ms. Allocated memory was 62.9 MB in the beginning and 121.6 MB in the end (delta: 58.7 MB). Free memory was 37.7 MB in the beginning and 70.0 MB in the end (delta: -32.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * Witness Printer took 100.00 ms. Allocated memory is still 121.6 MB. Free memory was 70.0 MB in the beginning and 67.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 955 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 212 SDtfs, 291 SDslu, 345 SDs, 0 SdLazy, 169 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4924 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...