./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 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/safe027_pso.opt.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 42b797c7228e4cc81a806d8614f65a2608450f7f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:11:29,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:11:29,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:11:29,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:11:29,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:11:29,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:11:29,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:11:29,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:11:29,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:11:29,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:11:29,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:11:30,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:11:30,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:11:30,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:11:30,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:11:30,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:11:30,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:11:30,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:11:30,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:11:30,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:11:30,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:11:30,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:11:30,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:11:30,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:11:30,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:11:30,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:11:30,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:11:30,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:11:30,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:11:30,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:11:30,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:11:30,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:11:30,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:11:30,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:11:30,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:11:30,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:11:30,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:11:30,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:11:30,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:11:30,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:11:30,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:11:30,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:11:30,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:11:30,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:11:30,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:11:30,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:11:30,078 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:11:30,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:11:30,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:11:30,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:11:30,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:11:30,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:11:30,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:11:30,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:11:30,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:11:30,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:11:30,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:11:30,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:11:30,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:11:30,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:11:30,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:11:30,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:11:30,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:11:30,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:11:30,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:11:30,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:11:30,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:11:30,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:11:30,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:11:30,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:11:30,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:11:30,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42b797c7228e4cc81a806d8614f65a2608450f7f [2020-12-02 12:11:30,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:11:30,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:11:30,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:11:30,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:11:30,540 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:11:30,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i [2020-12-02 12:11:30,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eda4c0f9/1266723de0c9480ebfc8c3f0e4914943/FLAGfc9c602f0 [2020-12-02 12:11:31,344 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:11:31,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i [2020-12-02 12:11:31,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eda4c0f9/1266723de0c9480ebfc8c3f0e4914943/FLAGfc9c602f0 [2020-12-02 12:11:31,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eda4c0f9/1266723de0c9480ebfc8c3f0e4914943 [2020-12-02 12:11:31,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:11:31,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:11:31,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:11:31,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:11:31,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:11:31,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:31" (1/1) ... [2020-12-02 12:11:31,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce9b8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:31, skipping insertion in model container [2020-12-02 12:11:31,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:31" (1/1) ... [2020-12-02 12:11:31,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:11:31,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:11:31,973 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i[949,962] [2020-12-02 12:11:32,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:11:32,187 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:11:32,206 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i[949,962] [2020-12-02 12:11:32,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:11:32,402 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:11:32,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32 WrapperNode [2020-12-02 12:11:32,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:11:32,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:11:32,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:11:32,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:11:32,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (1/1) ... [2020-12-02 12:11:32,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (1/1) ... [2020-12-02 12:11:32,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:11:32,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:11:32,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:11:32,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:11:32,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (1/1) ... [2020-12-02 12:11:32,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (1/1) ... [2020-12-02 12:11:32,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (1/1) ... [2020-12-02 12:11:32,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (1/1) ... [2020-12-02 12:11:32,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (1/1) ... [2020-12-02 12:11:32,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (1/1) ... [2020-12-02 12:11:32,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (1/1) ... [2020-12-02 12:11:32,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:11:32,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:11:32,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:11:32,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:11:32,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (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 [2020-12-02 12:11:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:11:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:11:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:11:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:11:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:11:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:11:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:11:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:11:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:11:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:11:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-02 12:11:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-02 12:11:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:11:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:11:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:11:32,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:11:32,607 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:11:33,105 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:11:33,106 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:11:33,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:33 BoogieIcfgContainer [2020-12-02 12:11:33,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:11:33,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:11:33,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:11:33,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:11:33,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:11:31" (1/3) ... [2020-12-02 12:11:33,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263243e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:33, skipping insertion in model container [2020-12-02 12:11:33,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:32" (2/3) ... [2020-12-02 12:11:33,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263243e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:33, skipping insertion in model container [2020-12-02 12:11:33,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:33" (3/3) ... [2020-12-02 12:11:33,120 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2020-12-02 12:11:33,138 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:11:33,139 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:11:33,143 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:11:33,144 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:11:33,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,187 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,188 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,190 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,190 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,191 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,192 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,194 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,194 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,195 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,195 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,197 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,198 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,198 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,198 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,198 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,198 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,202 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,202 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,202 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,203 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,208 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,208 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,209 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,209 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,215 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,215 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,215 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,215 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,219 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:33,224 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:11:33,239 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-02 12:11:33,270 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:11:33,270 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:11:33,270 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:11:33,271 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:11:33,271 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:11:33,271 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:11:33,271 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:11:33,271 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:11:33,285 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:11:33,287 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-02 12:11:33,291 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-02 12:11:33,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2020-12-02 12:11:33,361 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2020-12-02 12:11:33,362 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:11:33,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-02 12:11:33,375 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-02 12:11:37,237 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-02 12:11:37,341 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-02 12:11:37,599 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-02 12:11:37,717 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-02 12:11:38,003 INFO L131 LiptonReduction]: Checked pairs total: 3161 [2020-12-02 12:11:38,003 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-02 12:11:38,010 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-02 12:11:38,074 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-02 12:11:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-02 12:11:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:11:38,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:38,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:38,094 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:38,101 INFO L82 PathProgramCache]: Analyzing trace with hash -545263439, now seen corresponding path program 1 times [2020-12-02 12:11:38,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:38,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217295459] [2020-12-02 12:11:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:38,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217295459] [2020-12-02 12:11:38,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:38,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:11:38,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821543391] [2020-12-02 12:11:38,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:38,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:38,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:38,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:38,462 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-02 12:11:38,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:38,533 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2020-12-02 12:11:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:38,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-02 12:11:38,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:38,559 INFO L225 Difference]: With dead ends: 832 [2020-12-02 12:11:38,560 INFO L226 Difference]: Without dead ends: 553 [2020-12-02 12:11:38,562 INFO L677 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 [2020-12-02 12:11:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-02 12:11:38,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-12-02 12:11:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-12-02 12:11:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1851 transitions. [2020-12-02 12:11:38,682 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1851 transitions. Word has length 10 [2020-12-02 12:11:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:38,683 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1851 transitions. [2020-12-02 12:11:38,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1851 transitions. [2020-12-02 12:11:38,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:11:38,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:38,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:38,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:11:38,688 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:38,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:38,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1160874164, now seen corresponding path program 1 times [2020-12-02 12:11:38,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:38,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876186807] [2020-12-02 12:11:38,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:38,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876186807] [2020-12-02 12:11:38,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:38,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:38,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432397213] [2020-12-02 12:11:38,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:38,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:38,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:38,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:38,858 INFO L87 Difference]: Start difference. First operand 553 states and 1851 transitions. Second operand 4 states. [2020-12-02 12:11:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:38,885 INFO L93 Difference]: Finished difference Result 526 states and 1743 transitions. [2020-12-02 12:11:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:38,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:11:38,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:38,897 INFO L225 Difference]: With dead ends: 526 [2020-12-02 12:11:38,897 INFO L226 Difference]: Without dead ends: 526 [2020-12-02 12:11:38,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-02 12:11:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-02 12:11:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-02 12:11:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-02 12:11:38,928 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 11 [2020-12-02 12:11:38,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:38,928 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-02 12:11:38,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-02 12:11:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:11:38,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:38,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:38,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:11:38,931 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:38,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:38,932 INFO L82 PathProgramCache]: Analyzing trace with hash 276701328, now seen corresponding path program 1 times [2020-12-02 12:11:38,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:38,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467257735] [2020-12-02 12:11:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:38,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467257735] [2020-12-02 12:11:38,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:38,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:38,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302796834] [2020-12-02 12:11:38,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:38,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:38,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:38,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:38,999 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-02 12:11:39,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:39,041 INFO L93 Difference]: Finished difference Result 611 states and 2036 transitions. [2020-12-02 12:11:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:39,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:11:39,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:39,047 INFO L225 Difference]: With dead ends: 611 [2020-12-02 12:11:39,047 INFO L226 Difference]: Without dead ends: 611 [2020-12-02 12:11:39,048 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 [2020-12-02 12:11:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-12-02 12:11:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2020-12-02 12:11:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-12-02 12:11:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 2036 transitions. [2020-12-02 12:11:39,074 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 2036 transitions. Word has length 11 [2020-12-02 12:11:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:39,075 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 2036 transitions. [2020-12-02 12:11:39,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 2036 transitions. [2020-12-02 12:11:39,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:11:39,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:39,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:39,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:11:39,086 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:39,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:39,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1446350552, now seen corresponding path program 1 times [2020-12-02 12:11:39,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:39,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538802769] [2020-12-02 12:11:39,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:39,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538802769] [2020-12-02 12:11:39,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:39,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:39,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446682412] [2020-12-02 12:11:39,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:39,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:39,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:39,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:39,205 INFO L87 Difference]: Start difference. First operand 611 states and 2036 transitions. Second operand 4 states. [2020-12-02 12:11:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:39,229 INFO L93 Difference]: Finished difference Result 587 states and 1942 transitions. [2020-12-02 12:11:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:39,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:11:39,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:39,242 INFO L225 Difference]: With dead ends: 587 [2020-12-02 12:11:39,242 INFO L226 Difference]: Without dead ends: 587 [2020-12-02 12:11:39,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-12-02 12:11:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 571. [2020-12-02 12:11:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-02 12:11:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 1884 transitions. [2020-12-02 12:11:39,267 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 1884 transitions. Word has length 12 [2020-12-02 12:11:39,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:39,267 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 1884 transitions. [2020-12-02 12:11:39,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 1884 transitions. [2020-12-02 12:11:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:11:39,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:39,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:39,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:11:39,269 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:39,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:39,270 INFO L82 PathProgramCache]: Analyzing trace with hash -12194237, now seen corresponding path program 1 times [2020-12-02 12:11:39,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:39,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473248987] [2020-12-02 12:11:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:39,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473248987] [2020-12-02 12:11:39,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:39,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:39,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90955412] [2020-12-02 12:11:39,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:39,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:39,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:39,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:39,395 INFO L87 Difference]: Start difference. First operand 571 states and 1884 transitions. Second operand 5 states. [2020-12-02 12:11:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:39,433 INFO L93 Difference]: Finished difference Result 736 states and 2360 transitions. [2020-12-02 12:11:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:39,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:11:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:39,438 INFO L225 Difference]: With dead ends: 736 [2020-12-02 12:11:39,438 INFO L226 Difference]: Without dead ends: 376 [2020-12-02 12:11:39,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:39,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-02 12:11:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-12-02 12:11:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-02 12:11:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2020-12-02 12:11:39,454 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2020-12-02 12:11:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:39,454 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2020-12-02 12:11:39,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2020-12-02 12:11:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:11:39,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:39,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:39,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:11:39,456 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:39,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:39,456 INFO L82 PathProgramCache]: Analyzing trace with hash 367079963, now seen corresponding path program 1 times [2020-12-02 12:11:39,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:39,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004823560] [2020-12-02 12:11:39,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:39,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004823560] [2020-12-02 12:11:39,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:39,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:39,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436768114] [2020-12-02 12:11:39,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:39,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:39,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:39,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:39,532 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 4 states. [2020-12-02 12:11:39,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:39,560 INFO L93 Difference]: Finished difference Result 466 states and 1398 transitions. [2020-12-02 12:11:39,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:39,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:11:39,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:39,563 INFO L225 Difference]: With dead ends: 466 [2020-12-02 12:11:39,563 INFO L226 Difference]: Without dead ends: 226 [2020-12-02 12:11:39,563 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 [2020-12-02 12:11:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-02 12:11:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-02 12:11:39,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-02 12:11:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2020-12-02 12:11:39,572 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2020-12-02 12:11:39,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:39,573 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2020-12-02 12:11:39,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:39,573 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2020-12-02 12:11:39,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:11:39,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:39,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:39,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:11:39,574 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:39,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:39,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1626162599, now seen corresponding path program 1 times [2020-12-02 12:11:39,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:39,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333810829] [2020-12-02 12:11:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:39,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333810829] [2020-12-02 12:11:39,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:39,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:39,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491746392] [2020-12-02 12:11:39,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:39,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:39,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:39,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:39,675 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2020-12-02 12:11:39,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:39,711 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2020-12-02 12:11:39,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:39,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-02 12:11:39,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:39,714 INFO L225 Difference]: With dead ends: 287 [2020-12-02 12:11:39,714 INFO L226 Difference]: Without dead ends: 206 [2020-12-02 12:11:39,715 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 [2020-12-02 12:11:39,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-02 12:11:39,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-02 12:11:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-02 12:11:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-02 12:11:39,723 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2020-12-02 12:11:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:39,723 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-02 12:11:39,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-02 12:11:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:11:39,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:39,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:39,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:11:39,726 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:39,727 INFO L82 PathProgramCache]: Analyzing trace with hash 242504516, now seen corresponding path program 1 times [2020-12-02 12:11:39,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:39,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727919311] [2020-12-02 12:11:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:39,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727919311] [2020-12-02 12:11:39,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:39,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:39,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346484524] [2020-12-02 12:11:39,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:39,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:39,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:39,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:39,828 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2020-12-02 12:11:39,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:39,890 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2020-12-02 12:11:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:11:39,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:11:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:39,892 INFO L225 Difference]: With dead ends: 227 [2020-12-02 12:11:39,893 INFO L226 Difference]: Without dead ends: 162 [2020-12-02 12:11:39,893 INFO L677 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 [2020-12-02 12:11:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-02 12:11:39,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-02 12:11:39,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-02 12:11:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2020-12-02 12:11:39,901 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2020-12-02 12:11:39,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:39,902 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2020-12-02 12:11:39,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:39,902 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2020-12-02 12:11:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:11:39,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:39,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:39,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:11:39,904 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:39,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:39,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1073574531, now seen corresponding path program 1 times [2020-12-02 12:11:39,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:39,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404001174] [2020-12-02 12:11:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:39,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404001174] [2020-12-02 12:11:39,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:39,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:11:39,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668592993] [2020-12-02 12:11:39,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:11:39,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:39,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:11:39,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:39,969 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2020-12-02 12:11:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:40,033 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2020-12-02 12:11:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:11:40,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:11:40,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:40,036 INFO L225 Difference]: With dead ends: 158 [2020-12-02 12:11:40,036 INFO L226 Difference]: Without dead ends: 125 [2020-12-02 12:11:40,037 INFO L677 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 [2020-12-02 12:11:40,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-02 12:11:40,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-02 12:11:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-02 12:11:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2020-12-02 12:11:40,043 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2020-12-02 12:11:40,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:40,043 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2020-12-02 12:11:40,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:11:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2020-12-02 12:11:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:40,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:40,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:40,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:11:40,046 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:40,046 INFO L82 PathProgramCache]: Analyzing trace with hash -678185987, now seen corresponding path program 1 times [2020-12-02 12:11:40,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:40,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661803308] [2020-12-02 12:11:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:40,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661803308] [2020-12-02 12:11:40,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:40,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:40,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823158904] [2020-12-02 12:11:40,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:40,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:40,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:40,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:40,094 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 4 states. [2020-12-02 12:11:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:40,111 INFO L93 Difference]: Finished difference Result 166 states and 368 transitions. [2020-12-02 12:11:40,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:40,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-02 12:11:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:40,113 INFO L225 Difference]: With dead ends: 166 [2020-12-02 12:11:40,113 INFO L226 Difference]: Without dead ends: 127 [2020-12-02 12:11:40,113 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 [2020-12-02 12:11:40,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-02 12:11:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-02 12:11:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-02 12:11:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-02 12:11:40,119 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-02 12:11:40,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:40,119 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-02 12:11:40,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-02 12:11:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:40,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:40,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:40,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:11:40,121 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:40,122 INFO L82 PathProgramCache]: Analyzing trace with hash -972384293, now seen corresponding path program 1 times [2020-12-02 12:11:40,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:40,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691691264] [2020-12-02 12:11:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:40,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691691264] [2020-12-02 12:11:40,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:40,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:40,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448263925] [2020-12-02 12:11:40,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:40,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:40,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:40,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:40,165 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2020-12-02 12:11:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:40,182 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2020-12-02 12:11:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:40,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-02 12:11:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:40,184 INFO L225 Difference]: With dead ends: 142 [2020-12-02 12:11:40,184 INFO L226 Difference]: Without dead ends: 87 [2020-12-02 12:11:40,184 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 [2020-12-02 12:11:40,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-02 12:11:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-12-02 12:11:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-02 12:11:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2020-12-02 12:11:40,188 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2020-12-02 12:11:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:40,188 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2020-12-02 12:11:40,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-12-02 12:11:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:40,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:40,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:40,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:11:40,190 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:40,191 INFO L82 PathProgramCache]: Analyzing trace with hash -2140587643, now seen corresponding path program 2 times [2020-12-02 12:11:40,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:40,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371178936] [2020-12-02 12:11:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:40,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371178936] [2020-12-02 12:11:40,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:40,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:11:40,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796272166] [2020-12-02 12:11:40,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 12:11:40,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:40,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 12:11:40,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:11:40,259 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2020-12-02 12:11:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:40,303 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-12-02 12:11:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:11:40,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-02 12:11:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:40,304 INFO L225 Difference]: With dead ends: 81 [2020-12-02 12:11:40,304 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:11:40,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:11:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:11:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:11:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:11:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:11:40,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-02 12:11:40,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:40,306 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:11:40,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 12:11:40,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:11:40,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:11:40,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-02 12:11:40,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:11:40 BasicIcfg [2020-12-02 12:11:40,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:11:40,314 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:11:40,314 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:11:40,315 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:11:40,315 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:33" (3/4) ... [2020-12-02 12:11:40,319 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:11:40,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:11:40,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:11:40,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:11:40,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-02 12:11:40,332 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-02 12:11:40,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:11:40,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:40,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:40,378 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:11:40,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:11:40,380 INFO L168 Benchmark]: Toolchain (without parser) took 8792.51 ms. Allocated memory was 56.6 MB in the beginning and 153.1 MB in the end (delta: 96.5 MB). Free memory was 32.1 MB in the beginning and 125.9 MB in the end (delta: -93.8 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:40,381 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 44.0 MB. Free memory was 21.9 MB in the beginning and 21.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:11:40,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.89 ms. Allocated memory is still 56.6 MB. Free memory was 31.9 MB in the beginning and 25.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:40,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.17 ms. Allocated memory is still 56.6 MB. Free memory was 25.7 MB in the beginning and 38.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:40,383 INFO L168 Benchmark]: Boogie Preprocessor took 31.21 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 36.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:40,385 INFO L168 Benchmark]: RCFGBuilder took 608.02 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.9 MB in the beginning and 39.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:40,386 INFO L168 Benchmark]: TraceAbstraction took 7202.62 ms. Allocated memory was 69.2 MB in the beginning and 153.1 MB in the end (delta: 83.9 MB). Free memory was 39.0 MB in the beginning and 129.0 MB in the end (delta: -90.1 MB). Peak memory consumption was 66.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:40,386 INFO L168 Benchmark]: Witness Printer took 64.66 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 125.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:40,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 44.0 MB. Free memory was 21.9 MB in the beginning and 21.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 815.89 ms. Allocated memory is still 56.6 MB. Free memory was 31.9 MB in the beginning and 25.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.17 ms. Allocated memory is still 56.6 MB. Free memory was 25.7 MB in the beginning and 38.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.21 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 36.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 608.02 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.9 MB in the beginning and 39.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7202.62 ms. Allocated memory was 69.2 MB in the beginning and 153.1 MB in the end (delta: 83.9 MB). Free memory was 39.0 MB in the beginning and 129.0 MB in the end (delta: -90.1 MB). Peak memory consumption was 66.6 MB. Max. memory is 16.1 GB. * Witness Printer took 64.66 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 125.9 MB in the end (delta: 3.1 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 1210 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.7s, 98 PlacesBefore, 38 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3161 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 256 SDtfs, 294 SDslu, 379 SDs, 0 SdLazy, 196 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 8940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...