./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/uthash-2.0.2/uthash_SFH_test5-1.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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:53:01,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:53:01,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:53:01,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:53:01,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:53:01,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:53:01,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:53:01,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:53:01,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:53:01,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:53:01,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:53:01,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:53:01,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:53:01,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:53:01,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:53:01,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:53:01,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:53:01,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:53:01,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:53:01,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:53:01,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:53:01,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:53:01,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:53:01,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:53:01,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:53:01,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:53:01,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:53:01,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:53:01,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:53:01,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:53:01,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:53:01,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:53:01,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:53:01,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:53:01,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:53:01,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:53:01,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:53:01,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:53:01,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:53:01,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:53:01,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:53:01,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 13:53:01,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:53:01,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:53:01,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:53:01,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:53:01,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:53:01,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:53:01,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:53:01,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:53:01,844 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:53:01,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:53:01,845 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:53:01,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 13:53:01,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:53:01,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:53:01,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:53:01,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:53:01,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:53:01,846 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:53:01,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:53:01,847 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:53:01,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:53:01,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:53:01,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:53:01,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:53:01,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:53:01,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:53:01,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:53:01,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:53:01,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 13:53:01,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 13:53:01,849 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:53:01,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:53:01,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:53:01,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:53:01,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2021-12-15 13:53:02,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:53:02,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:53:02,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:53:02,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:53:02,091 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:53:02,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-12-15 13:53:02,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec4b246c/b2116a71822445ea9893190db92f6096/FLAGe4a7a18b8 [2021-12-15 13:53:02,663 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:53:02,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-12-15 13:53:02,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec4b246c/b2116a71822445ea9893190db92f6096/FLAGe4a7a18b8 [2021-12-15 13:53:03,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec4b246c/b2116a71822445ea9893190db92f6096 [2021-12-15 13:53:03,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:53:03,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:53:03,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:53:03,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:53:03,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:53:03,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789bc045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03, skipping insertion in model container [2021-12-15 13:53:03,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:53:03,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:53:03,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-12-15 13:53:03,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-12-15 13:53:03,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:53:03,632 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:53:03,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-12-15 13:53:03,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-12-15 13:53:03,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:53:03,757 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:53:03,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03 WrapperNode [2021-12-15 13:53:03,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:53:03,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:53:03,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:53:03,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:53:03,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,864 INFO L137 Inliner]: procedures = 177, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1402 [2021-12-15 13:53:03,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:53:03,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:53:03,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:53:03,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:53:03,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:03,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:53:03,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:53:03,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:53:03,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:53:03,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (1/1) ... [2021-12-15 13:53:04,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:53:04,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:04,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 13:53:04,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 13:53:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 13:53:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 13:53:04,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 13:53:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 13:53:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:53:04,127 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:53:04,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:53:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:53:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:53:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:53:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 13:53:04,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:53:04,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:53:04,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 13:53:04,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:53:04,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:53:04,369 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:53:04,370 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:53:05,379 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:53:05,392 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:53:05,392 INFO L301 CfgBuilder]: Removed 83 assume(true) statements. [2021-12-15 13:53:05,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:53:05 BoogieIcfgContainer [2021-12-15 13:53:05,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:53:05,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:53:05,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:53:05,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:53:05,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:53:03" (1/3) ... [2021-12-15 13:53:05,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee1ecba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:53:05, skipping insertion in model container [2021-12-15 13:53:05,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:03" (2/3) ... [2021-12-15 13:53:05,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee1ecba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:53:05, skipping insertion in model container [2021-12-15 13:53:05,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:53:05" (3/3) ... [2021-12-15 13:53:05,404 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2021-12-15 13:53:05,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:53:05,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 13:53:05,462 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:53:05,479 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 13:53:05,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 13:53:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 242 states have (on average 1.6983471074380165) internal successors, (411), 249 states have internal predecessors, (411), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:05,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 13:53:05,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:05,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:05,503 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:05,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:05,507 INFO L85 PathProgramCache]: Analyzing trace with hash 691392686, now seen corresponding path program 1 times [2021-12-15 13:53:05,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:53:05,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576630227] [2021-12-15 13:53:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:05,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:53:05,593 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:53:05,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088693689] [2021-12-15 13:53:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:05,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:05,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:05,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:53:05,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 13:53:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:05,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 13:53:05,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:05,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:05,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:53:05,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576630227] [2021-12-15 13:53:05,808 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:53:05,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088693689] [2021-12-15 13:53:05,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088693689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:05,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:05,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 13:53:05,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984336944] [2021-12-15 13:53:05,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:05,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 13:53:05,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:53:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 13:53:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:53:05,846 INFO L87 Difference]: Start difference. First operand has 258 states, 242 states have (on average 1.6983471074380165) internal successors, (411), 249 states have internal predecessors, (411), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:05,902 INFO L93 Difference]: Finished difference Result 514 states and 869 transitions. [2021-12-15 13:53:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 13:53:05,907 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 13:53:05,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:05,925 INFO L225 Difference]: With dead ends: 514 [2021-12-15 13:53:05,925 INFO L226 Difference]: Without dead ends: 254 [2021-12-15 13:53:05,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:53:05,937 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:05,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:53:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-12-15 13:53:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-12-15 13:53:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 239 states have (on average 1.3179916317991631) internal successors, (315), 245 states have internal predecessors, (315), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 337 transitions. [2021-12-15 13:53:06,003 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 337 transitions. Word has length 8 [2021-12-15 13:53:06,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:06,003 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 337 transitions. [2021-12-15 13:53:06,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:06,004 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 337 transitions. [2021-12-15 13:53:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-15 13:53:06,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:06,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:06,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:06,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-15 13:53:06,220 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:06,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:06,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1622673081, now seen corresponding path program 1 times [2021-12-15 13:53:06,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:53:06,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343627026] [2021-12-15 13:53:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:06,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:53:06,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:53:06,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22220805] [2021-12-15 13:53:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:06,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:06,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:06,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:53:06,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 13:53:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:06,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 13:53:06,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:06,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:06,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:53:06,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343627026] [2021-12-15 13:53:06,535 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:53:06,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22220805] [2021-12-15 13:53:06,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22220805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:06,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:06,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:53:06,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714951655] [2021-12-15 13:53:06,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:06,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:53:06,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:53:06,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:53:06,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:06,539 INFO L87 Difference]: Start difference. First operand 254 states and 337 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:06,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:06,592 INFO L93 Difference]: Finished difference Result 573 states and 768 transitions. [2021-12-15 13:53:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:53:06,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-15 13:53:06,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:06,595 INFO L225 Difference]: With dead ends: 573 [2021-12-15 13:53:06,595 INFO L226 Difference]: Without dead ends: 495 [2021-12-15 13:53:06,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:06,597 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 300 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:06,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 730 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:53:06,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-15 13:53:06,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 255. [2021-12-15 13:53:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 240 states have (on average 1.3166666666666667) internal successors, (316), 246 states have internal predecessors, (316), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2021-12-15 13:53:06,636 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 42 [2021-12-15 13:53:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:06,637 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2021-12-15 13:53:06,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2021-12-15 13:53:06,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-15 13:53:06,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:06,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:06,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:06,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-15 13:53:06,842 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:06,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1488765968, now seen corresponding path program 1 times [2021-12-15 13:53:06,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:53:06,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630320625] [2021-12-15 13:53:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:06,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:53:07,076 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:53:07,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812419896] [2021-12-15 13:53:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:07,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:07,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:07,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:53:07,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 13:53:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:07,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:53:08,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:08,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:08,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:53:08,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630320625] [2021-12-15 13:53:08,243 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:53:08,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812419896] [2021-12-15 13:53:08,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812419896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:08,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:08,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:53:08,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503394599] [2021-12-15 13:53:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:08,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:53:08,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:53:08,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:53:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:08,248 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:08,353 INFO L93 Difference]: Finished difference Result 528 states and 704 transitions. [2021-12-15 13:53:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:53:08,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-12-15 13:53:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:08,356 INFO L225 Difference]: With dead ends: 528 [2021-12-15 13:53:08,356 INFO L226 Difference]: Without dead ends: 276 [2021-12-15 13:53:08,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:08,363 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 9 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:08,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 619 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:53:08,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-12-15 13:53:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2021-12-15 13:53:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 260 states have (on average 1.2923076923076924) internal successors, (336), 266 states have internal predecessors, (336), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 358 transitions. [2021-12-15 13:53:08,375 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 358 transitions. Word has length 140 [2021-12-15 13:53:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:08,375 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 358 transitions. [2021-12-15 13:53:08,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 358 transitions. [2021-12-15 13:53:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-15 13:53:08,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:08,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:08,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:08,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:08,595 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:08,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:08,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1918424274, now seen corresponding path program 1 times [2021-12-15 13:53:08,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:53:08,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856865678] [2021-12-15 13:53:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:08,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:53:08,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:53:08,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682675109] [2021-12-15 13:53:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:08,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:08,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:08,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:53:08,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 13:53:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:09,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:53:09,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:09,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:09,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:53:09,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856865678] [2021-12-15 13:53:09,911 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:53:09,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682675109] [2021-12-15 13:53:09,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682675109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:09,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:09,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:53:09,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145886652] [2021-12-15 13:53:09,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:09,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:53:09,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:53:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:53:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:09,914 INFO L87 Difference]: Start difference. First operand 275 states and 358 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:10,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:10,010 INFO L93 Difference]: Finished difference Result 568 states and 744 transitions. [2021-12-15 13:53:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:53:10,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-12-15 13:53:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:10,013 INFO L225 Difference]: With dead ends: 568 [2021-12-15 13:53:10,013 INFO L226 Difference]: Without dead ends: 296 [2021-12-15 13:53:10,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:10,015 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 8 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:10,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 621 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:53:10,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-15 13:53:10,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2021-12-15 13:53:10,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 280 states have (on average 1.2714285714285714) internal successors, (356), 286 states have internal predecessors, (356), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 378 transitions. [2021-12-15 13:53:10,024 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 378 transitions. Word has length 140 [2021-12-15 13:53:10,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:10,025 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 378 transitions. [2021-12-15 13:53:10,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 378 transitions. [2021-12-15 13:53:10,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-15 13:53:10,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:10,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:10,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:10,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:10,251 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash -690363184, now seen corresponding path program 1 times [2021-12-15 13:53:10,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:53:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179049133] [2021-12-15 13:53:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:10,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:53:10,401 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:53:10,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105516478] [2021-12-15 13:53:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:10,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:10,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:10,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:53:10,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 13:53:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:11,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 3051 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:53:11,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 13:53:11,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:11,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:53:11,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179049133] [2021-12-15 13:53:11,710 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:53:11,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105516478] [2021-12-15 13:53:11,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105516478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:11,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:11,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:53:11,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017347282] [2021-12-15 13:53:11,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:11,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:53:11,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:53:11,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:53:11,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:11,712 INFO L87 Difference]: Start difference. First operand 295 states and 378 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:11,777 INFO L93 Difference]: Finished difference Result 393 states and 514 transitions. [2021-12-15 13:53:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:53:11,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-12-15 13:53:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:11,780 INFO L225 Difference]: With dead ends: 393 [2021-12-15 13:53:11,780 INFO L226 Difference]: Without dead ends: 316 [2021-12-15 13:53:11,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:11,782 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 9 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:11,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 619 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:53:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-15 13:53:11,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-12-15 13:53:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 300 states have (on average 1.2533333333333334) internal successors, (376), 306 states have internal predecessors, (376), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 398 transitions. [2021-12-15 13:53:11,790 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 398 transitions. Word has length 140 [2021-12-15 13:53:11,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:11,790 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 398 transitions. [2021-12-15 13:53:11,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:11,791 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 398 transitions. [2021-12-15 13:53:11,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-15 13:53:11,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:11,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:11,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:12,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:12,016 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:12,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash -909217902, now seen corresponding path program 1 times [2021-12-15 13:53:12,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:53:12,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047110958] [2021-12-15 13:53:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:12,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:53:12,139 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:53:12,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645106333] [2021-12-15 13:53:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:12,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:12,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:12,141 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:53:12,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 13:53:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:13,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:53:13,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:13,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:13,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:53:13,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047110958] [2021-12-15 13:53:13,552 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:53:13,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645106333] [2021-12-15 13:53:13,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645106333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:13,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:13,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:53:13,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888811516] [2021-12-15 13:53:13,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:13,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:53:13,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:53:13,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:53:13,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:53:13,554 INFO L87 Difference]: Start difference. First operand 315 states and 398 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:13,654 INFO L93 Difference]: Finished difference Result 619 states and 785 transitions. [2021-12-15 13:53:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:53:13,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-12-15 13:53:13,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:13,656 INFO L225 Difference]: With dead ends: 619 [2021-12-15 13:53:13,657 INFO L226 Difference]: Without dead ends: 307 [2021-12-15 13:53:13,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:53:13,658 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 294 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:13,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 647 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:53:13,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-12-15 13:53:13,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2021-12-15 13:53:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 286 states have (on average 1.2412587412587412) internal successors, (355), 292 states have internal predecessors, (355), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 377 transitions. [2021-12-15 13:53:13,666 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 377 transitions. Word has length 140 [2021-12-15 13:53:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:13,666 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 377 transitions. [2021-12-15 13:53:13,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 377 transitions. [2021-12-15 13:53:13,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-15 13:53:13,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:13,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:13,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:13,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:13,896 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash -992002364, now seen corresponding path program 1 times [2021-12-15 13:53:13,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:53:13,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812984154] [2021-12-15 13:53:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:13,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:53:14,028 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:53:14,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293503504] [2021-12-15 13:53:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:14,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:14,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:14,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 13:53:14,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 13:53:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:15,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 13:53:15,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:15,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:15,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:53:15,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812984154] [2021-12-15 13:53:15,558 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:53:15,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293503504] [2021-12-15 13:53:15,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293503504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:15,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:15,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 13:53:15,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171570225] [2021-12-15 13:53:15,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:15,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 13:53:15,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:53:15,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 13:53:15,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:53:15,561 INFO L87 Difference]: Start difference. First operand 301 states and 377 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:53:15,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:53:15,628 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 186 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:15,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 885 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:53:15,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:15,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:53:15,848 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:53:15,852 INFO L158 Benchmark]: Toolchain (without parser) took 12734.28ms. Allocated memory was 104.9MB in the beginning and 333.4MB in the end (delta: 228.6MB). Free memory was 83.2MB in the beginning and 114.4MB in the end (delta: -31.3MB). Peak memory consumption was 195.1MB. Max. memory is 16.1GB. [2021-12-15 13:53:15,852 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 77.6MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:53:15,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.08ms. Allocated memory is still 104.9MB. Free memory was 83.0MB in the beginning and 48.5MB in the end (delta: 34.5MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2021-12-15 13:53:15,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.74ms. Allocated memory is still 104.9MB. Free memory was 48.0MB in the beginning and 74.1MB in the end (delta: -26.1MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-12-15 13:53:15,853 INFO L158 Benchmark]: Boogie Preprocessor took 123.63ms. Allocated memory is still 104.9MB. Free memory was 74.1MB in the beginning and 64.6MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 13:53:15,853 INFO L158 Benchmark]: RCFGBuilder took 1406.38ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 64.6MB in the beginning and 93.9MB in the end (delta: -29.4MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2021-12-15 13:53:15,854 INFO L158 Benchmark]: TraceAbstraction took 10453.41ms. Allocated memory was 130.0MB in the beginning and 333.4MB in the end (delta: 203.4MB). Free memory was 93.9MB in the beginning and 114.4MB in the end (delta: -20.5MB). Peak memory consumption was 180.5MB. Max. memory is 16.1GB. [2021-12-15 13:53:15,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 77.6MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 639.08ms. Allocated memory is still 104.9MB. Free memory was 83.0MB in the beginning and 48.5MB in the end (delta: 34.5MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.74ms. Allocated memory is still 104.9MB. Free memory was 48.0MB in the beginning and 74.1MB in the end (delta: -26.1MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 123.63ms. Allocated memory is still 104.9MB. Free memory was 74.1MB in the beginning and 64.6MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1406.38ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 64.6MB in the beginning and 93.9MB in the end (delta: -29.4MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10453.41ms. Allocated memory was 130.0MB in the beginning and 333.4MB in the end (delta: 203.4MB). Free memory was 93.9MB in the beginning and 114.4MB in the end (delta: -20.5MB). Peak memory consumption was 180.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:53:15,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/uthash-2.0.2/uthash_SFH_test5-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:53:17,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:53:17,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:53:17,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:53:17,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:53:17,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:53:17,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:53:17,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:53:17,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:53:17,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:53:17,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:53:17,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:53:17,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:53:17,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:53:17,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:53:17,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:53:17,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:53:17,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:53:17,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:53:17,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:53:17,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:53:17,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:53:17,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:53:17,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:53:17,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:53:17,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:53:17,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:53:17,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:53:17,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:53:17,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:53:17,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:53:17,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:53:17,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:53:17,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:53:17,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:53:17,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:53:17,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:53:17,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:53:17,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:53:17,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:53:17,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:53:17,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 13:53:17,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:53:17,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:53:17,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:53:17,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:53:17,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:53:17,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:53:17,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:53:17,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:53:17,926 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:53:17,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:53:17,927 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:53:17,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:53:17,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:53:17,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:53:17,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:53:17,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:53:17,928 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 13:53:17,928 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 13:53:17,928 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 13:53:17,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:53:17,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:53:17,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:53:17,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:53:17,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:53:17,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:53:17,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:53:17,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:53:17,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:53:17,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:53:17,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:53:17,931 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 13:53:17,931 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 13:53:17,931 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:53:17,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:53:17,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:53:17,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:53:17,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 13:53:17,932 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2021-12-15 13:53:18,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:53:18,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:53:18,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:53:18,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:53:18,276 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:53:18,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-12-15 13:53:18,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b893cc389/8c63ed9415dc4437b5f60eec78e39528/FLAG35192d303 [2021-12-15 13:53:18,867 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:53:18,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-12-15 13:53:18,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b893cc389/8c63ed9415dc4437b5f60eec78e39528/FLAG35192d303 [2021-12-15 13:53:19,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b893cc389/8c63ed9415dc4437b5f60eec78e39528 [2021-12-15 13:53:19,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:53:19,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:53:19,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:53:19,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:53:19,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:53:19,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:53:19" (1/1) ... [2021-12-15 13:53:19,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c85c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:19, skipping insertion in model container [2021-12-15 13:53:19,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:53:19" (1/1) ... [2021-12-15 13:53:19,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:53:19,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:53:19,812 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-12-15 13:53:19,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-12-15 13:53:19,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:53:19,975 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 13:53:19,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:53:20,014 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-12-15 13:53:20,099 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-12-15 13:53:20,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:53:20,106 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:53:20,163 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-12-15 13:53:20,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-12-15 13:53:20,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:53:20,278 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:53:20,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20 WrapperNode [2021-12-15 13:53:20,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:53:20,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:53:20,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:53:20,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:53:20,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,408 INFO L137 Inliner]: procedures = 180, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1402 [2021-12-15 13:53:20,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:53:20,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:53:20,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:53:20,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:53:20,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:53:20,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:53:20,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:53:20,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:53:20,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (1/1) ... [2021-12-15 13:53:20,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:53:20,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:53:20,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 13:53:20,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 13:53:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 13:53:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 13:53:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 13:53:20,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 13:53:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:53:20,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:53:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:53:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:53:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:53:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:53:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 13:53:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:53:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:53:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 13:53:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 13:53:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:53:20,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:53:20,919 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:53:20,920 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:53:29,424 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:53:29,431 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:53:29,431 INFO L301 CfgBuilder]: Removed 83 assume(true) statements. [2021-12-15 13:53:29,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:53:29 BoogieIcfgContainer [2021-12-15 13:53:29,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:53:29,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:53:29,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:53:29,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:53:29,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:53:19" (1/3) ... [2021-12-15 13:53:29,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef141fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:53:29, skipping insertion in model container [2021-12-15 13:53:29,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:53:20" (2/3) ... [2021-12-15 13:53:29,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef141fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:53:29, skipping insertion in model container [2021-12-15 13:53:29,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:53:29" (3/3) ... [2021-12-15 13:53:29,440 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2021-12-15 13:53:29,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:53:29,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 13:53:29,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:53:29,485 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 13:53:29,486 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 13:53:29,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 242 states have (on average 1.6983471074380165) internal successors, (411), 249 states have internal predecessors, (411), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 13:53:29,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:29,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:29,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:29,510 INFO L85 PathProgramCache]: Analyzing trace with hash 691392686, now seen corresponding path program 1 times [2021-12-15 13:53:29,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:53:29,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560029796] [2021-12-15 13:53:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:29,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:53:29,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:53:29,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:53:29,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 13:53:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:29,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 13:53:29,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:29,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:29,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:53:29,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560029796] [2021-12-15 13:53:29,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560029796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:29,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:29,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 13:53:29,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519873638] [2021-12-15 13:53:29,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:29,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 13:53:29,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:53:29,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 13:53:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:53:29,792 INFO L87 Difference]: Start difference. First operand has 258 states, 242 states have (on average 1.6983471074380165) internal successors, (411), 249 states have internal predecessors, (411), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:29,855 INFO L93 Difference]: Finished difference Result 514 states and 869 transitions. [2021-12-15 13:53:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 13:53:29,856 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 13:53:29,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:29,870 INFO L225 Difference]: With dead ends: 514 [2021-12-15 13:53:29,871 INFO L226 Difference]: Without dead ends: 254 [2021-12-15 13:53:29,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:53:29,881 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:29,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:53:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-12-15 13:53:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-12-15 13:53:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 239 states have (on average 1.3179916317991631) internal successors, (315), 245 states have internal predecessors, (315), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 337 transitions. [2021-12-15 13:53:29,941 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 337 transitions. Word has length 8 [2021-12-15 13:53:29,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:29,941 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 337 transitions. [2021-12-15 13:53:29,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:29,942 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 337 transitions. [2021-12-15 13:53:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-15 13:53:29,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:29,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:29,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:30,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:53:30,164 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:30,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1622673081, now seen corresponding path program 1 times [2021-12-15 13:53:30,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:53:30,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758383212] [2021-12-15 13:53:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:30,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:53:30,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:53:30,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:53:30,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 13:53:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:30,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 13:53:30,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:30,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:30,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:53:30,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758383212] [2021-12-15 13:53:30,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758383212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:30,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:30,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:53:30,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623528268] [2021-12-15 13:53:30,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:30,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:53:30,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:53:30,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:53:30,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:30,480 INFO L87 Difference]: Start difference. First operand 254 states and 337 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:30,686 INFO L93 Difference]: Finished difference Result 573 states and 768 transitions. [2021-12-15 13:53:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:53:30,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-15 13:53:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:30,692 INFO L225 Difference]: With dead ends: 573 [2021-12-15 13:53:30,692 INFO L226 Difference]: Without dead ends: 495 [2021-12-15 13:53:30,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:30,694 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 300 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:30,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 730 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 13:53:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-15 13:53:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 255. [2021-12-15 13:53:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 240 states have (on average 1.3166666666666667) internal successors, (316), 246 states have internal predecessors, (316), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2021-12-15 13:53:30,709 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 42 [2021-12-15 13:53:30,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:30,710 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2021-12-15 13:53:30,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2021-12-15 13:53:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-15 13:53:30,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:30,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:30,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-15 13:53:30,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:53:30,920 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:30,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1488765968, now seen corresponding path program 1 times [2021-12-15 13:53:30,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:53:30,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858557959] [2021-12-15 13:53:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:30,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:53:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:53:30,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:53:30,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 13:53:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:32,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:53:32,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:32,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:32,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:53:32,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858557959] [2021-12-15 13:53:32,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858557959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:32,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:32,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:53:32,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342532800] [2021-12-15 13:53:32,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:32,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:53:32,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:53:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:53:32,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:53:32,857 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:32,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:32,967 INFO L93 Difference]: Finished difference Result 516 states and 685 transitions. [2021-12-15 13:53:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:53:32,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-12-15 13:53:32,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:32,969 INFO L225 Difference]: With dead ends: 516 [2021-12-15 13:53:32,969 INFO L226 Difference]: Without dead ends: 264 [2021-12-15 13:53:32,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:53:32,973 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 291 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:32,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 643 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:53:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-15 13:53:32,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 258. [2021-12-15 13:53:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 243 states have (on average 1.2798353909465021) internal successors, (311), 249 states have internal predecessors, (311), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 333 transitions. [2021-12-15 13:53:32,995 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 333 transitions. Word has length 140 [2021-12-15 13:53:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:32,995 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 333 transitions. [2021-12-15 13:53:32,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:32,996 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 333 transitions. [2021-12-15 13:53:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-15 13:53:33,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:33,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:33,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:33,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:53:33,216 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:33,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1835639812, now seen corresponding path program 1 times [2021-12-15 13:53:33,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:53:33,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515554757] [2021-12-15 13:53:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:33,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:53:33,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:53:33,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:53:33,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 13:53:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:53:34,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2098 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:53:34,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:53:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:53:35,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:53:35,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:53:35,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515554757] [2021-12-15 13:53:35,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515554757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:53:35,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:53:35,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:53:35,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062847815] [2021-12-15 13:53:35,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:53:35,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:53:35,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:53:35,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:53:35,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:35,240 INFO L87 Difference]: Start difference. First operand 258 states and 333 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:35,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:53:35,416 INFO L93 Difference]: Finished difference Result 554 states and 709 transitions. [2021-12-15 13:53:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:53:35,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-12-15 13:53:35,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:53:35,425 INFO L225 Difference]: With dead ends: 554 [2021-12-15 13:53:35,425 INFO L226 Difference]: Without dead ends: 299 [2021-12-15 13:53:35,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:53:35,427 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 11 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 13:53:35,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 635 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 13:53:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-15 13:53:35,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-12-15 13:53:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 284 states have (on average 1.2535211267605635) internal successors, (356), 290 states have internal predecessors, (356), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-15 13:53:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 378 transitions. [2021-12-15 13:53:35,436 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 378 transitions. Word has length 140 [2021-12-15 13:53:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:53:35,437 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 378 transitions. [2021-12-15 13:53:35,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:53:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 378 transitions. [2021-12-15 13:53:35,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-15 13:53:35,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:53:35,439 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:53:35,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:35,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:53:35,660 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:53:35,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:53:35,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1891908699, now seen corresponding path program 1 times [2021-12-15 13:53:35,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:53:35,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886324835] [2021-12-15 13:53:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:53:35,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:53:35,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:53:35,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 13:53:35,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 13:53:35,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-15 13:53:36,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:53:36,108 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:53:36,114 INFO L158 Benchmark]: Toolchain (without parser) took 16755.86ms. Allocated memory was 56.6MB in the beginning and 104.9MB in the end (delta: 48.2MB). Free memory was 38.5MB in the beginning and 54.4MB in the end (delta: -16.0MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. [2021-12-15 13:53:36,115 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 46.1MB. Free memory was 28.2MB in the beginning and 28.2MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:53:36,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 919.81ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 31.5MB in the end (delta: 6.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2021-12-15 13:53:36,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 132.81ms. Allocated memory is still 56.6MB. Free memory was 31.5MB in the beginning and 23.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 13:53:36,116 INFO L158 Benchmark]: Boogie Preprocessor took 151.23ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 23.0MB in the beginning and 37.1MB in the end (delta: -14.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-12-15 13:53:36,116 INFO L158 Benchmark]: RCFGBuilder took 8868.07ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 37.1MB in the beginning and 44.6MB in the end (delta: -7.6MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2021-12-15 13:53:36,118 INFO L158 Benchmark]: TraceAbstraction took 6678.44ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 44.0MB in the beginning and 54.4MB in the end (delta: -10.4MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2021-12-15 13:53:36,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 46.1MB. Free memory was 28.2MB in the beginning and 28.2MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 919.81ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 31.5MB in the end (delta: 6.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 132.81ms. Allocated memory is still 56.6MB. Free memory was 31.5MB in the beginning and 23.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 151.23ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 23.0MB in the beginning and 37.1MB in the end (delta: -14.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * RCFGBuilder took 8868.07ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 37.1MB in the beginning and 44.6MB in the end (delta: -7.6MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6678.44ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 44.0MB in the beginning and 54.4MB in the end (delta: -10.4MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:53:36,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable