./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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-atomic/lamport.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 677832ca70867188187df7c021dced66a1433320 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 02:45:13,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 02:45:13,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 02:45:13,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 02:45:13,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 02:45:13,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 02:45:13,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 02:45:13,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 02:45:13,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 02:45:13,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 02:45:13,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 02:45:13,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 02:45:13,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 02:45:13,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 02:45:13,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 02:45:13,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 02:45:13,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 02:45:13,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 02:45:13,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 02:45:13,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 02:45:13,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 02:45:13,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 02:45:13,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 02:45:13,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 02:45:13,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 02:45:13,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 02:45:13,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 02:45:13,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 02:45:13,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 02:45:13,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 02:45:13,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 02:45:13,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 02:45:13,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 02:45:13,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 02:45:13,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 02:45:13,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 02:45:13,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 02:45:13,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 02:45:13,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 02:45:13,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 02:45:13,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 02:45:13,857 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 02:45:13,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 02:45:13,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 02:45:13,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 02:45:13,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 02:45:13,890 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 02:45:13,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 02:45:13,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 02:45:13,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 02:45:13,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 02:45:13,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 02:45:13,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 02:45:13,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 02:45:13,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 02:45:13,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 02:45:13,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 02:45:13,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 02:45:13,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 02:45:13,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 02:45:13,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 02:45:13,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 02:45:13,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 02:45:13,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:45:13,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 02:45:13,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 02:45:13,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 02:45:13,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 02:45:13,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 02:45:13,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 02:45:13,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 02:45:13,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 677832ca70867188187df7c021dced66a1433320 [2020-10-20 02:45:14,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 02:45:14,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 02:45:14,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 02:45:14,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 02:45:14,126 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 02:45:14,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/lamport.i [2020-10-20 02:45:14,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7250e9321/839d21d48ae147e387dfa306d9f3d9fa/FLAG56fd74248 [2020-10-20 02:45:14,687 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 02:45:14,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/lamport.i [2020-10-20 02:45:14,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7250e9321/839d21d48ae147e387dfa306d9f3d9fa/FLAG56fd74248 [2020-10-20 02:45:15,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7250e9321/839d21d48ae147e387dfa306d9f3d9fa [2020-10-20 02:45:15,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 02:45:15,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 02:45:15,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 02:45:15,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 02:45:15,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 02:45:15,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@370988c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15, skipping insertion in model container [2020-10-20 02:45:15,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 02:45:15,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 02:45:15,462 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-20 02:45:15,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:45:15,672 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 02:45:15,703 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-20 02:45:15,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:45:15,855 INFO L208 MainTranslator]: Completed translation [2020-10-20 02:45:15,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15 WrapperNode [2020-10-20 02:45:15,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 02:45:15,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 02:45:15,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 02:45:15,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 02:45:15,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 02:45:15,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 02:45:15,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 02:45:15,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 02:45:15,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (1/1) ... [2020-10-20 02:45:15,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 02:45:15,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 02:45:15,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 02:45:15,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 02:45:15,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:45:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 02:45:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-20 02:45:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-20 02:45:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-20 02:45:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-20 02:45:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 02:45:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 02:45:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 02:45:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 02:45:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 02:45:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 02:45:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 02:45:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 02:45:16,036 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 02:45:16,464 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 02:45:16,465 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 02:45:16,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:16 BoogieIcfgContainer [2020-10-20 02:45:16,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 02:45:16,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 02:45:16,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 02:45:16,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 02:45:16,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 02:45:15" (1/3) ... [2020-10-20 02:45:16,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e215b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:45:16, skipping insertion in model container [2020-10-20 02:45:16,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:15" (2/3) ... [2020-10-20 02:45:16,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e215b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:45:16, skipping insertion in model container [2020-10-20 02:45:16,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:16" (3/3) ... [2020-10-20 02:45:16,476 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-20 02:45:16,486 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 02:45:16,486 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 02:45:16,493 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 02:45:16,494 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 02:45:16,522 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,523 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,523 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,523 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,524 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,524 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,525 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,529 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,529 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,529 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,530 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,531 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,531 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,531 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,549 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,555 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,555 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,555 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,556 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:16,567 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-20 02:45:16,579 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 02:45:16,596 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 02:45:16,597 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 02:45:16,597 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 02:45:16,597 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 02:45:16,597 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 02:45:16,597 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 02:45:16,598 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 02:45:16,598 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 02:45:16,616 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 02:45:16,619 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 127 transitions, 276 flow [2020-10-20 02:45:16,622 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 127 transitions, 276 flow [2020-10-20 02:45:16,625 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 106 places, 127 transitions, 276 flow [2020-10-20 02:45:16,683 INFO L129 PetriNetUnfolder]: 27/127 cut-off events. [2020-10-20 02:45:16,684 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-20 02:45:16,694 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 127 events. 27/127 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 293 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2020-10-20 02:45:16,709 INFO L117 LiptonReduction]: Number of co-enabled transitions 5016 [2020-10-20 02:45:18,573 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-20 02:45:18,688 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-20 02:45:18,732 INFO L132 LiptonReduction]: Checked pairs total: 15983 [2020-10-20 02:45:18,732 INFO L134 LiptonReduction]: Total number of compositions: 87 [2020-10-20 02:45:18,740 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 70 transitions, 162 flow [2020-10-20 02:45:18,795 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 922 states. [2020-10-20 02:45:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states. [2020-10-20 02:45:18,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 02:45:18,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:18,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 02:45:18,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:18,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:18,813 INFO L82 PathProgramCache]: Analyzing trace with hash 17394993, now seen corresponding path program 1 times [2020-10-20 02:45:18,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:18,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623580852] [2020-10-20 02:45:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:18,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623580852] [2020-10-20 02:45:18,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:18,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:45:18,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917624230] [2020-10-20 02:45:18,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 02:45:18,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:19,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 02:45:19,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 02:45:19,013 INFO L87 Difference]: Start difference. First operand 922 states. Second operand 2 states. [2020-10-20 02:45:19,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:19,064 INFO L93 Difference]: Finished difference Result 922 states and 2650 transitions. [2020-10-20 02:45:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 02:45:19,066 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-20 02:45:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:19,096 INFO L225 Difference]: With dead ends: 922 [2020-10-20 02:45:19,097 INFO L226 Difference]: Without dead ends: 883 [2020-10-20 02:45:19,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 02:45:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-10-20 02:45:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-10-20 02:45:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-10-20 02:45:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2565 transitions. [2020-10-20 02:45:19,229 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2565 transitions. Word has length 4 [2020-10-20 02:45:19,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:19,230 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 2565 transitions. [2020-10-20 02:45:19,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 02:45:19,231 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2565 transitions. [2020-10-20 02:45:19,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 02:45:19,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:19,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:19,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 02:45:19,233 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:19,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:19,234 INFO L82 PathProgramCache]: Analyzing trace with hash 412846903, now seen corresponding path program 1 times [2020-10-20 02:45:19,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:19,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802399770] [2020-10-20 02:45:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:19,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802399770] [2020-10-20 02:45:19,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:19,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:45:19,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558925133] [2020-10-20 02:45:19,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:45:19,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:19,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:45:19,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:19,356 INFO L87 Difference]: Start difference. First operand 883 states and 2565 transitions. Second operand 3 states. [2020-10-20 02:45:19,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:19,394 INFO L93 Difference]: Finished difference Result 884 states and 2526 transitions. [2020-10-20 02:45:19,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:45:19,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 02:45:19,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:19,402 INFO L225 Difference]: With dead ends: 884 [2020-10-20 02:45:19,403 INFO L226 Difference]: Without dead ends: 740 [2020-10-20 02:45:19,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-20 02:45:19,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 722. [2020-10-20 02:45:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-10-20 02:45:19,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 2118 transitions. [2020-10-20 02:45:19,438 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 2118 transitions. Word has length 9 [2020-10-20 02:45:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:19,438 INFO L481 AbstractCegarLoop]: Abstraction has 722 states and 2118 transitions. [2020-10-20 02:45:19,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:45:19,438 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 2118 transitions. [2020-10-20 02:45:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 02:45:19,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:19,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:19,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 02:45:19,442 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:19,442 INFO L82 PathProgramCache]: Analyzing trace with hash 359561458, now seen corresponding path program 1 times [2020-10-20 02:45:19,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:19,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782851375] [2020-10-20 02:45:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:19,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782851375] [2020-10-20 02:45:19,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:19,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:45:19,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506737258] [2020-10-20 02:45:19,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:45:19,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:19,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:45:19,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:19,516 INFO L87 Difference]: Start difference. First operand 722 states and 2118 transitions. Second operand 3 states. [2020-10-20 02:45:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:19,595 INFO L93 Difference]: Finished difference Result 697 states and 2029 transitions. [2020-10-20 02:45:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:45:19,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 02:45:19,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:19,602 INFO L225 Difference]: With dead ends: 697 [2020-10-20 02:45:19,602 INFO L226 Difference]: Without dead ends: 556 [2020-10-20 02:45:19,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:19,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-10-20 02:45:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2020-10-20 02:45:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-10-20 02:45:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1659 transitions. [2020-10-20 02:45:19,623 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1659 transitions. Word has length 11 [2020-10-20 02:45:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:19,624 INFO L481 AbstractCegarLoop]: Abstraction has 556 states and 1659 transitions. [2020-10-20 02:45:19,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:45:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1659 transitions. [2020-10-20 02:45:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 02:45:19,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:19,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:19,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 02:45:19,649 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:19,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:19,649 INFO L82 PathProgramCache]: Analyzing trace with hash 542706882, now seen corresponding path program 1 times [2020-10-20 02:45:19,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:19,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009917773] [2020-10-20 02:45:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:19,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009917773] [2020-10-20 02:45:19,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:19,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 02:45:19,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363646724] [2020-10-20 02:45:19,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:45:19,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:19,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:45:19,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:45:19,711 INFO L87 Difference]: Start difference. First operand 556 states and 1659 transitions. Second operand 4 states. [2020-10-20 02:45:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:19,814 INFO L93 Difference]: Finished difference Result 1126 states and 3290 transitions. [2020-10-20 02:45:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 02:45:19,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 02:45:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:19,819 INFO L225 Difference]: With dead ends: 1126 [2020-10-20 02:45:19,820 INFO L226 Difference]: Without dead ends: 608 [2020-10-20 02:45:19,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 02:45:19,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-20 02:45:19,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 586. [2020-10-20 02:45:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-10-20 02:45:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1712 transitions. [2020-10-20 02:45:19,840 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1712 transitions. Word has length 17 [2020-10-20 02:45:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:19,841 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1712 transitions. [2020-10-20 02:45:19,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:45:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1712 transitions. [2020-10-20 02:45:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 02:45:19,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:19,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:19,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 02:45:19,843 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash 993683538, now seen corresponding path program 1 times [2020-10-20 02:45:19,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:19,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376478413] [2020-10-20 02:45:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:19,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376478413] [2020-10-20 02:45:19,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:19,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:45:19,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67812495] [2020-10-20 02:45:19,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:45:19,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:19,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:45:19,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:19,879 INFO L87 Difference]: Start difference. First operand 586 states and 1712 transitions. Second operand 3 states. [2020-10-20 02:45:19,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:19,903 INFO L93 Difference]: Finished difference Result 854 states and 2378 transitions. [2020-10-20 02:45:19,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:45:19,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 02:45:19,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:19,910 INFO L225 Difference]: With dead ends: 854 [2020-10-20 02:45:19,910 INFO L226 Difference]: Without dead ends: 848 [2020-10-20 02:45:19,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-20 02:45:19,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 654. [2020-10-20 02:45:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-10-20 02:45:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1904 transitions. [2020-10-20 02:45:19,953 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1904 transitions. Word has length 17 [2020-10-20 02:45:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:19,954 INFO L481 AbstractCegarLoop]: Abstraction has 654 states and 1904 transitions. [2020-10-20 02:45:19,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:45:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1904 transitions. [2020-10-20 02:45:19,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 02:45:19,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:19,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:19,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 02:45:19,956 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:19,957 INFO L82 PathProgramCache]: Analyzing trace with hash -574401340, now seen corresponding path program 2 times [2020-10-20 02:45:19,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:19,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129563973] [2020-10-20 02:45:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:19,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129563973] [2020-10-20 02:45:19,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:19,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:45:19,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487151069] [2020-10-20 02:45:19,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:45:19,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:19,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:45:19,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:19,987 INFO L87 Difference]: Start difference. First operand 654 states and 1904 transitions. Second operand 3 states. [2020-10-20 02:45:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:20,036 INFO L93 Difference]: Finished difference Result 772 states and 2193 transitions. [2020-10-20 02:45:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:45:20,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 02:45:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:20,042 INFO L225 Difference]: With dead ends: 772 [2020-10-20 02:45:20,043 INFO L226 Difference]: Without dead ends: 506 [2020-10-20 02:45:20,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:20,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-20 02:45:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 434. [2020-10-20 02:45:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-20 02:45:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1152 transitions. [2020-10-20 02:45:20,062 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1152 transitions. Word has length 17 [2020-10-20 02:45:20,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:20,062 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 1152 transitions. [2020-10-20 02:45:20,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:45:20,062 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1152 transitions. [2020-10-20 02:45:20,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 02:45:20,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:20,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:20,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 02:45:20,065 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:20,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:20,065 INFO L82 PathProgramCache]: Analyzing trace with hash 363887280, now seen corresponding path program 2 times [2020-10-20 02:45:20,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:20,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210549399] [2020-10-20 02:45:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:20,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210549399] [2020-10-20 02:45:20,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:20,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:45:20,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315346307] [2020-10-20 02:45:20,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:45:20,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:20,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:45:20,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:20,095 INFO L87 Difference]: Start difference. First operand 434 states and 1152 transitions. Second operand 3 states. [2020-10-20 02:45:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:20,114 INFO L93 Difference]: Finished difference Result 514 states and 1254 transitions. [2020-10-20 02:45:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:45:20,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 02:45:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:20,118 INFO L225 Difference]: With dead ends: 514 [2020-10-20 02:45:20,119 INFO L226 Difference]: Without dead ends: 510 [2020-10-20 02:45:20,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-20 02:45:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 372. [2020-10-20 02:45:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-20 02:45:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 917 transitions. [2020-10-20 02:45:20,137 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 917 transitions. Word has length 17 [2020-10-20 02:45:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:20,138 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 917 transitions. [2020-10-20 02:45:20,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:45:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 917 transitions. [2020-10-20 02:45:20,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 02:45:20,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:20,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:20,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 02:45:20,140 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:20,141 INFO L82 PathProgramCache]: Analyzing trace with hash -727583029, now seen corresponding path program 1 times [2020-10-20 02:45:20,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:20,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265619631] [2020-10-20 02:45:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:20,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265619631] [2020-10-20 02:45:20,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:20,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 02:45:20,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627910721] [2020-10-20 02:45:20,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:45:20,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:20,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:45:20,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:45:20,176 INFO L87 Difference]: Start difference. First operand 372 states and 917 transitions. Second operand 4 states. [2020-10-20 02:45:20,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:20,214 INFO L93 Difference]: Finished difference Result 420 states and 1013 transitions. [2020-10-20 02:45:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 02:45:20,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-20 02:45:20,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:20,217 INFO L225 Difference]: With dead ends: 420 [2020-10-20 02:45:20,218 INFO L226 Difference]: Without dead ends: 362 [2020-10-20 02:45:20,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 02:45:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-20 02:45:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 326. [2020-10-20 02:45:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-20 02:45:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 789 transitions. [2020-10-20 02:45:20,229 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 789 transitions. Word has length 21 [2020-10-20 02:45:20,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:20,229 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 789 transitions. [2020-10-20 02:45:20,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:45:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 789 transitions. [2020-10-20 02:45:20,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 02:45:20,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:20,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:20,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 02:45:20,231 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:20,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:20,232 INFO L82 PathProgramCache]: Analyzing trace with hash -594574117, now seen corresponding path program 1 times [2020-10-20 02:45:20,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:20,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511843988] [2020-10-20 02:45:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:20,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511843988] [2020-10-20 02:45:20,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:20,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 02:45:20,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973179638] [2020-10-20 02:45:20,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:45:20,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:20,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:45:20,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:45:20,312 INFO L87 Difference]: Start difference. First operand 326 states and 789 transitions. Second operand 4 states. [2020-10-20 02:45:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:20,337 INFO L93 Difference]: Finished difference Result 160 states and 396 transitions. [2020-10-20 02:45:20,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 02:45:20,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-20 02:45:20,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:20,338 INFO L225 Difference]: With dead ends: 160 [2020-10-20 02:45:20,338 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 02:45:20,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 02:45:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 02:45:20,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 02:45:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 02:45:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 02:45:20,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-20 02:45:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:20,340 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 02:45:20,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:45:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 02:45:20,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 02:45:20,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 02:45:20,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 02:45:20 BasicIcfg [2020-10-20 02:45:20,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 02:45:20,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 02:45:20,346 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 02:45:20,347 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 02:45:20,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:16" (3/4) ... [2020-10-20 02:45:20,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 02:45:20,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-10-20 02:45:20,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-10-20 02:45:20,365 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-20 02:45:20,365 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 02:45:20,366 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:45:20,366 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:45:20,422 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 02:45:20,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 02:45:20,424 INFO L168 Benchmark]: Toolchain (without parser) took 5329.45 ms. Allocated memory was 36.2 MB in the beginning and 83.9 MB in the end (delta: 47.7 MB). Free memory was 8.3 MB in the beginning and 48.3 MB in the end (delta: -40.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:20,425 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 36.2 MB. Free memory is still 15.0 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 02:45:20,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.29 ms. Allocated memory was 36.2 MB in the beginning and 48.2 MB in the end (delta: 12.1 MB). Free memory was 7.4 MB in the beginning and 23.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:20,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.54 ms. Allocated memory is still 48.2 MB. Free memory was 23.1 MB in the beginning and 21.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:20,432 INFO L168 Benchmark]: Boogie Preprocessor took 34.47 ms. Allocated memory is still 48.2 MB. Free memory was 20.8 MB in the beginning and 19.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:20,437 INFO L168 Benchmark]: RCFGBuilder took 514.43 ms. Allocated memory was 48.2 MB in the beginning and 50.9 MB in the end (delta: 2.6 MB). Free memory was 19.0 MB in the beginning and 31.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:20,438 INFO L168 Benchmark]: TraceAbstraction took 3877.50 ms. Allocated memory was 50.9 MB in the beginning and 83.9 MB in the end (delta: 33.0 MB). Free memory was 30.9 MB in the beginning and 51.4 MB in the end (delta: -20.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:20,439 INFO L168 Benchmark]: Witness Printer took 76.25 ms. Allocated memory is still 83.9 MB. Free memory was 51.4 MB in the beginning and 48.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:20,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 36.2 MB. Free memory is still 15.0 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 751.29 ms. Allocated memory was 36.2 MB in the beginning and 48.2 MB in the end (delta: 12.1 MB). Free memory was 7.4 MB in the beginning and 23.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 60.54 ms. Allocated memory is still 48.2 MB. Free memory was 23.1 MB in the beginning and 21.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 34.47 ms. Allocated memory is still 48.2 MB. Free memory was 20.8 MB in the beginning and 19.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 514.43 ms. Allocated memory was 48.2 MB in the beginning and 50.9 MB in the end (delta: 2.6 MB). Free memory was 19.0 MB in the beginning and 31.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3877.50 ms. Allocated memory was 50.9 MB in the beginning and 83.9 MB in the end (delta: 33.0 MB). Free memory was 30.9 MB in the beginning and 51.4 MB in the end (delta: -20.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * Witness Printer took 76.25 ms. Allocated memory is still 83.9 MB. Free memory was 51.4 MB in the beginning and 48.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3058 VarBasedMoverChecksPositive, 168 VarBasedMoverChecksNegative, 102 SemBasedMoverChecksPositive, 66 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 740 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 106 PlacesBefore, 57 PlacesAfterwards, 127 TransitionsBefore, 70 TransitionsAfterwards, 5016 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 8 ChoiceCompositions, 87 TotalNumberOfCompositions, 15983 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 100 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 657 SDtfs, 312 SDslu, 465 SDs, 0 SdLazy, 142 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=922occurred 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, 9 MinimizatonAttempts, 480 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 3417 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...