./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/combinations/Problem05_label42+token_ring.12.cil-2.c -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 48263e5b2fdfa125a212d9dd2b1aa7b4bc28734093ef4904b2507084a0cf2933 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:39:57,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:39:57,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:39:57,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:39:57,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:39:57,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:39:57,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:39:57,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:39:57,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:39:57,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:39:57,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:39:57,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:39:57,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:39:57,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:39:57,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:39:57,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:39:57,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:39:57,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:39:57,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:39:57,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:39:57,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:39:57,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:39:57,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:39:57,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:39:57,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:39:57,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:39:57,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:39:57,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:39:57,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:39:57,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:39:57,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:39:57,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:39:57,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:39:57,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:39:57,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:39:57,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:39:57,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:39:57,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:39:57,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:39:57,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:39:57,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:39:57,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:39:57,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:39:57,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:39:57,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:39:57,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:39:57,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:39:57,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:39:57,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:39:57,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:39:57,813 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:39:57,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:39:57,814 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:39:57,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:39:57,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:39:57,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:39:57,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:39:57,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:39:57,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:39:57,815 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:39:57,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:39:57,816 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:39:57,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:39:57,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:39:57,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:39:57,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:39:57,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:39:57,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:39:57,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:39:57,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:39:57,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:39:57,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:39:57,818 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:39:57,818 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:39:57,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:39:57,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:39:57,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48263e5b2fdfa125a212d9dd2b1aa7b4bc28734093ef4904b2507084a0cf2933 [2021-12-14 15:39:58,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:39:58,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:39:58,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:39:58,116 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:39:58,116 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:39:58,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c [2021-12-14 15:39:58,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ee80fb4/ba09b6940cac47c79cdf7bd23528f828/FLAGfbbaf6746 [2021-12-14 15:39:59,059 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:39:59,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-2.c [2021-12-14 15:39:59,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ee80fb4/ba09b6940cac47c79cdf7bd23528f828/FLAGfbbaf6746 [2021-12-14 15:39:59,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ee80fb4/ba09b6940cac47c79cdf7bd23528f828 [2021-12-14 15:39:59,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:39:59,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:39:59,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:39:59,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:39:59,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:39:59,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:39:59" (1/1) ... [2021-12-14 15:39:59,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7cb99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:59, skipping insertion in model container [2021-12-14 15:39:59,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:39:59" (1/1) ... [2021-12-14 15:39:59,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:39:59,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:40:00,909 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/combinations/Problem05_label42+token_ring.12.cil-2.c[378560,378573] [2021-12-14 15:40:00,936 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/combinations/Problem05_label42+token_ring.12.cil-2.c[383339,383352] [2021-12-14 15:40:01,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:40:01,236 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:40:02,113 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/combinations/Problem05_label42+token_ring.12.cil-2.c[378560,378573] [2021-12-14 15:40:02,123 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/combinations/Problem05_label42+token_ring.12.cil-2.c[383339,383352] [2021-12-14 15:40:02,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:40:02,196 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:40:02,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02 WrapperNode [2021-12-14 15:40:02,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:40:02,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:40:02,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:40:02,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:40:02,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (1/1) ... [2021-12-14 15:40:02,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (1/1) ... [2021-12-14 15:40:02,634 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2021-12-14 15:40:02,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:40:02,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:40:02,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:40:02,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:40:02,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (1/1) ... [2021-12-14 15:40:02,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (1/1) ... [2021-12-14 15:40:02,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (1/1) ... [2021-12-14 15:40:02,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (1/1) ... [2021-12-14 15:40:03,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (1/1) ... [2021-12-14 15:40:03,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (1/1) ... [2021-12-14 15:40:03,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (1/1) ... [2021-12-14 15:40:03,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:40:03,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:40:03,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:40:03,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:40:03,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (1/1) ... [2021-12-14 15:40:03,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:40:03,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:40:03,380 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) [2021-12-14 15:40:03,402 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 [2021-12-14 15:40:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:40:03,423 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:40:03,423 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:40:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:40:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:40:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:40:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:40:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:40:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:40:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:40:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:40:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:40:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:40:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:40:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:40:03,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:40:03,595 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:40:03,596 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:40:10,483 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:40:10,517 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:40:10,517 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-14 15:40:10,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:40:10 BoogieIcfgContainer [2021-12-14 15:40:10,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:40:10,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:40:10,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:40:10,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:40:10,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:39:59" (1/3) ... [2021-12-14 15:40:10,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8fc9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:40:10, skipping insertion in model container [2021-12-14 15:40:10,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:40:02" (2/3) ... [2021-12-14 15:40:10,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8fc9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:40:10, skipping insertion in model container [2021-12-14 15:40:10,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:40:10" (3/3) ... [2021-12-14 15:40:10,528 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.12.cil-2.c [2021-12-14 15:40:10,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:40:10,532 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:40:10,576 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:40:10,581 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 [2021-12-14 15:40:10,582 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:40:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-14 15:40:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:10,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:10,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:10,653 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:10,658 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2021-12-14 15:40:10,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:10,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337749577] [2021-12-14 15:40:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:10,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:10,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:11,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:11,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:11,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:11,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337749577] [2021-12-14 15:40:11,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337749577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:11,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:11,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:40:11,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188646426] [2021-12-14 15:40:11,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:11,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:40:11,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:11,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:40:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:40:11,276 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:13,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:13,066 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2021-12-14 15:40:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:40:13,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:13,144 INFO L225 Difference]: With dead ends: 5266 [2021-12-14 15:40:13,144 INFO L226 Difference]: Without dead ends: 2640 [2021-12-14 15:40:13,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:40:13,195 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 1034 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 17168 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:13,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 17168 Invalid, 763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:40:13,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-14 15:40:13,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-14 15:40:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-14 15:40:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2021-12-14 15:40:13,462 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2021-12-14 15:40:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:13,463 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2021-12-14 15:40:13,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2021-12-14 15:40:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:13,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:13,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:13,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:40:13,472 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:13,473 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2021-12-14 15:40:13,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:13,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402194805] [2021-12-14 15:40:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:13,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:13,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:13,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:13,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:13,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:13,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402194805] [2021-12-14 15:40:13,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402194805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:13,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:13,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:40:13,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051629752] [2021-12-14 15:40:13,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:13,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:40:13,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:13,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:40:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:40:13,706 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:16,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:16,217 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2021-12-14 15:40:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:40:16,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:16,233 INFO L225 Difference]: With dead ends: 3002 [2021-12-14 15:40:16,234 INFO L226 Difference]: Without dead ends: 2640 [2021-12-14 15:40:16,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:40:16,241 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 1020 mSDsluCounter, 12282 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 16895 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:16,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 16895 Invalid, 762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:40:16,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-14 15:40:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-14 15:40:16,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-14 15:40:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2021-12-14 15:40:16,323 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2021-12-14 15:40:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:16,325 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2021-12-14 15:40:16,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2021-12-14 15:40:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:16,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:16,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:16,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:40:16,332 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:16,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2021-12-14 15:40:16,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:16,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725992095] [2021-12-14 15:40:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:16,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:16,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:16,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:16,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:16,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:16,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:16,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725992095] [2021-12-14 15:40:16,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725992095] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:16,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:16,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:40:16,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702908578] [2021-12-14 15:40:16,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:16,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:40:16,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:16,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:40:16,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:40:16,704 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:19,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:19,851 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2021-12-14 15:40:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:40:19,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:19,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:19,868 INFO L225 Difference]: With dead ends: 3514 [2021-12-14 15:40:19,868 INFO L226 Difference]: Without dead ends: 3157 [2021-12-14 15:40:19,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:40:19,870 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5509 mSDsluCounter, 12878 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 17543 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:19,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5528 Valid, 17543 Invalid, 2068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 15:40:19,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-12-14 15:40:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2021-12-14 15:40:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-14 15:40:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2021-12-14 15:40:20,003 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2021-12-14 15:40:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:20,004 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2021-12-14 15:40:20,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2021-12-14 15:40:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:20,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:20,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:20,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:40:20,008 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:20,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2021-12-14 15:40:20,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:20,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009678658] [2021-12-14 15:40:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:20,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:20,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:20,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:20,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:20,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:20,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:20,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009678658] [2021-12-14 15:40:20,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009678658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:20,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:20,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:20,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002698400] [2021-12-14 15:40:20,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:20,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:20,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:20,185 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:22,224 INFO L93 Difference]: Finished difference Result 3912 states and 6843 transitions. [2021-12-14 15:40:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:40:22,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:22,241 INFO L225 Difference]: With dead ends: 3912 [2021-12-14 15:40:22,242 INFO L226 Difference]: Without dead ends: 3179 [2021-12-14 15:40:22,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:40:22,258 INFO L933 BasicCegarLoop]: 4608 mSDtfsCounter, 5073 mSDsluCounter, 16762 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 21370 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:22,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 21370 Invalid, 1597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:40:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2021-12-14 15:40:22,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2874. [2021-12-14 15:40:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7969416785206258) internal successors, (5053), 2815 states have internal predecessors, (5053), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-14 15:40:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5150 transitions. [2021-12-14 15:40:22,381 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5150 transitions. Word has length 178 [2021-12-14 15:40:22,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:22,382 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5150 transitions. [2021-12-14 15:40:22,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:22,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5150 transitions. [2021-12-14 15:40:22,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:22,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:22,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:22,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:40:22,392 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:22,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2021-12-14 15:40:22,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:22,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517508191] [2021-12-14 15:40:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:22,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:22,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:22,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:22,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:22,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:22,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:22,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517508191] [2021-12-14 15:40:22,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517508191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:22,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:22,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:22,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838069537] [2021-12-14 15:40:22,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:22,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:22,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:22,570 INFO L87 Difference]: Start difference. First operand 2874 states and 5150 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:25,780 INFO L93 Difference]: Finished difference Result 4423 states and 7658 transitions. [2021-12-14 15:40:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:40:25,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:25,803 INFO L225 Difference]: With dead ends: 4423 [2021-12-14 15:40:25,803 INFO L226 Difference]: Without dead ends: 3690 [2021-12-14 15:40:25,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:40:25,807 INFO L933 BasicCegarLoop]: 4728 mSDtfsCounter, 5634 mSDsluCounter, 17170 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5653 SdHoareTripleChecker+Valid, 21898 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:25,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5653 Valid, 21898 Invalid, 2836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-14 15:40:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-12-14 15:40:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3223. [2021-12-14 15:40:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7727417810405361) internal successors, (5554), 3137 states have internal predecessors, (5554), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-14 15:40:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5695 transitions. [2021-12-14 15:40:25,920 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5695 transitions. Word has length 178 [2021-12-14 15:40:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:25,920 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 5695 transitions. [2021-12-14 15:40:25,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5695 transitions. [2021-12-14 15:40:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:25,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:25,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:25,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:40:25,924 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:25,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:25,924 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2021-12-14 15:40:25,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:25,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966287740] [2021-12-14 15:40:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:25,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:25,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:26,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:26,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:26,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:26,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966287740] [2021-12-14 15:40:26,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966287740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:26,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:26,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:26,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767369757] [2021-12-14 15:40:26,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:26,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:26,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:26,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:26,112 INFO L87 Difference]: Start difference. First operand 3223 states and 5695 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:30,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:30,115 INFO L93 Difference]: Finished difference Result 5766 states and 9803 transitions. [2021-12-14 15:40:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:40:30,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:30,138 INFO L225 Difference]: With dead ends: 5766 [2021-12-14 15:40:30,139 INFO L226 Difference]: Without dead ends: 4684 [2021-12-14 15:40:30,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:40:30,147 INFO L933 BasicCegarLoop]: 4950 mSDtfsCounter, 5535 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5554 SdHoareTripleChecker+Valid, 22714 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:30,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5554 Valid, 22714 Invalid, 3124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-14 15:40:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2021-12-14 15:40:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 3923. [2021-12-14 15:40:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.736563410113847) internal successors, (6559), 3783 states have internal predecessors, (6559), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:40:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6792 transitions. [2021-12-14 15:40:30,327 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6792 transitions. Word has length 178 [2021-12-14 15:40:30,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:30,328 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6792 transitions. [2021-12-14 15:40:30,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6792 transitions. [2021-12-14 15:40:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:30,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:30,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:30,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:40:30,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:30,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2021-12-14 15:40:30,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:30,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298876642] [2021-12-14 15:40:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:30,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:30,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:30,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:30,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:30,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:30,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298876642] [2021-12-14 15:40:30,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298876642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:30,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:30,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:30,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034145145] [2021-12-14 15:40:30,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:30,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:30,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:30,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:30,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:30,492 INFO L87 Difference]: Start difference. First operand 3923 states and 6792 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:32,312 INFO L93 Difference]: Finished difference Result 6452 states and 10885 transitions. [2021-12-14 15:40:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:40:32,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:32,337 INFO L225 Difference]: With dead ends: 6452 [2021-12-14 15:40:32,342 INFO L226 Difference]: Without dead ends: 4670 [2021-12-14 15:40:32,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:40:32,352 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5240 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5260 SdHoareTripleChecker+Valid, 17203 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:32,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5260 Valid, 17203 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:40:32,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-12-14 15:40:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 3923. [2021-12-14 15:40:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.73523960815462) internal successors, (6554), 3783 states have internal predecessors, (6554), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:40:32,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6787 transitions. [2021-12-14 15:40:32,549 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6787 transitions. Word has length 178 [2021-12-14 15:40:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:32,550 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6787 transitions. [2021-12-14 15:40:32,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:32,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6787 transitions. [2021-12-14 15:40:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:32,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:32,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:32,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:40:32,568 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:32,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:32,569 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2021-12-14 15:40:32,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:32,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392183761] [2021-12-14 15:40:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:32,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:32,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:32,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:32,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:32,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:32,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392183761] [2021-12-14 15:40:32,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392183761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:32,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:32,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:32,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395003743] [2021-12-14 15:40:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:32,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:32,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:32,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:32,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:32,984 INFO L87 Difference]: Start difference. First operand 3923 states and 6787 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:34,612 INFO L93 Difference]: Finished difference Result 6446 states and 10858 transitions. [2021-12-14 15:40:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:40:34,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:34,632 INFO L225 Difference]: With dead ends: 6446 [2021-12-14 15:40:34,632 INFO L226 Difference]: Without dead ends: 4664 [2021-12-14 15:40:34,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:40:34,641 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5072 mSDsluCounter, 16761 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5092 SdHoareTripleChecker+Valid, 21350 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:34,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5092 Valid, 21350 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:40:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2021-12-14 15:40:34,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 3923. [2021-12-14 15:40:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.7339158061953932) internal successors, (6549), 3783 states have internal predecessors, (6549), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:40:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6782 transitions. [2021-12-14 15:40:34,806 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6782 transitions. Word has length 178 [2021-12-14 15:40:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:34,807 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6782 transitions. [2021-12-14 15:40:34,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6782 transitions. [2021-12-14 15:40:34,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:34,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:34,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:34,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:40:34,811 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:34,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2021-12-14 15:40:34,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:34,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327174900] [2021-12-14 15:40:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:34,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:34,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:34,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:34,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:34,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:34,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327174900] [2021-12-14 15:40:34,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327174900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:34,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:34,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:34,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424058867] [2021-12-14 15:40:34,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:34,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:34,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:34,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:34,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:34,990 INFO L87 Difference]: Start difference. First operand 3923 states and 6782 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:36,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:36,722 INFO L93 Difference]: Finished difference Result 6440 states and 10831 transitions. [2021-12-14 15:40:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:40:36,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:36,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:36,755 INFO L225 Difference]: With dead ends: 6440 [2021-12-14 15:40:36,755 INFO L226 Difference]: Without dead ends: 4658 [2021-12-14 15:40:36,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:40:36,791 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 5236 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5256 SdHoareTripleChecker+Valid, 17195 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:36,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5256 Valid, 17195 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:40:36,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-12-14 15:40:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3923. [2021-12-14 15:40:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.7325920042361662) internal successors, (6544), 3783 states have internal predecessors, (6544), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:40:37,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6777 transitions. [2021-12-14 15:40:37,016 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6777 transitions. Word has length 178 [2021-12-14 15:40:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:37,016 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6777 transitions. [2021-12-14 15:40:37,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:37,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6777 transitions. [2021-12-14 15:40:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:37,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:37,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:37,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:40:37,044 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:37,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:37,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2021-12-14 15:40:37,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:37,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599800671] [2021-12-14 15:40:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:37,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:37,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:37,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599800671] [2021-12-14 15:40:37,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599800671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:37,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:37,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:37,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837085208] [2021-12-14 15:40:37,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:37,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:37,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:37,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:37,223 INFO L87 Difference]: Start difference. First operand 3923 states and 6777 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:41,119 INFO L93 Difference]: Finished difference Result 8330 states and 13794 transitions. [2021-12-14 15:40:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:40:41,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:41,137 INFO L225 Difference]: With dead ends: 8330 [2021-12-14 15:40:41,137 INFO L226 Difference]: Without dead ends: 6548 [2021-12-14 15:40:41,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:40:41,145 INFO L933 BasicCegarLoop]: 4922 mSDtfsCounter, 5504 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5523 SdHoareTripleChecker+Valid, 22686 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:41,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5523 Valid, 22686 Invalid, 3049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-14 15:40:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2021-12-14 15:40:41,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 5345. [2021-12-14 15:40:41,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 5087 states have (on average 1.6850796147041478) internal successors, (8572), 5097 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-14 15:40:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 8995 transitions. [2021-12-14 15:40:41,461 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 8995 transitions. Word has length 178 [2021-12-14 15:40:41,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:41,462 INFO L470 AbstractCegarLoop]: Abstraction has 5345 states and 8995 transitions. [2021-12-14 15:40:41,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:41,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 8995 transitions. [2021-12-14 15:40:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:41,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:41,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:41,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:40:41,468 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:41,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2021-12-14 15:40:41,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:41,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874847925] [2021-12-14 15:40:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:41,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:41,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:41,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:41,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:41,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874847925] [2021-12-14 15:40:41,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874847925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:41,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:41,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:41,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265139166] [2021-12-14 15:40:41,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:41,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:41,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:41,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:41,629 INFO L87 Difference]: Start difference. First operand 5345 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:45,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:45,138 INFO L93 Difference]: Finished difference Result 13508 states and 21962 transitions. [2021-12-14 15:40:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:40:45,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:45,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:45,170 INFO L225 Difference]: With dead ends: 13508 [2021-12-14 15:40:45,171 INFO L226 Difference]: Without dead ends: 10304 [2021-12-14 15:40:45,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:40:45,183 INFO L933 BasicCegarLoop]: 4917 mSDtfsCounter, 5503 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5522 SdHoareTripleChecker+Valid, 22681 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:45,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5522 Valid, 22681 Invalid, 3041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-14 15:40:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10304 states. [2021-12-14 15:40:45,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10304 to 8188. [2021-12-14 15:40:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 7706 states have (on average 1.6379444588632235) internal successors, (12622), 7724 states have internal predecessors, (12622), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-14 15:40:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 13443 transitions. [2021-12-14 15:40:45,579 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 13443 transitions. Word has length 178 [2021-12-14 15:40:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:45,580 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 13443 transitions. [2021-12-14 15:40:45,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 13443 transitions. [2021-12-14 15:40:45,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:45,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:45,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:45,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:40:45,586 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:45,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:45,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1619539713, now seen corresponding path program 1 times [2021-12-14 15:40:45,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:45,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350422496] [2021-12-14 15:40:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:45,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:45,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:45,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:45,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:45,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350422496] [2021-12-14 15:40:45,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350422496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:45,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:45,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:45,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761942787] [2021-12-14 15:40:45,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:45,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:45,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:45,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:45,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:45,737 INFO L87 Difference]: Start difference. First operand 8188 states and 13443 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:49,385 INFO L93 Difference]: Finished difference Result 23857 states and 38344 transitions. [2021-12-14 15:40:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:40:49,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:40:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:49,443 INFO L225 Difference]: With dead ends: 23857 [2021-12-14 15:40:49,444 INFO L226 Difference]: Without dead ends: 17810 [2021-12-14 15:40:49,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:40:49,469 INFO L933 BasicCegarLoop]: 4679 mSDtfsCounter, 5599 mSDsluCounter, 17123 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5618 SdHoareTripleChecker+Valid, 21802 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:49,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5618 Valid, 21802 Invalid, 2762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:40:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17810 states. [2021-12-14 15:40:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17810 to 13889. [2021-12-14 15:40:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13889 states, 12959 states have (on average 1.6007407979010726) internal successors, (20744), 12993 states have internal predecessors, (20744), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-14 15:40:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 22415 transitions. [2021-12-14 15:40:50,402 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 22415 transitions. Word has length 178 [2021-12-14 15:40:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:50,403 INFO L470 AbstractCegarLoop]: Abstraction has 13889 states and 22415 transitions. [2021-12-14 15:40:50,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 22415 transitions. [2021-12-14 15:40:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:40:50,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:50,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:40:50,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:40:50,412 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:50,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:50,413 INFO L85 PathProgramCache]: Analyzing trace with hash -778448125, now seen corresponding path program 1 times [2021-12-14 15:40:50,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:50,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164772295] [2021-12-14 15:40:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:50,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:50,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:40:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:40:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:40:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:40:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:50,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:50,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164772295] [2021-12-14 15:40:50,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164772295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:50,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:50,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:50,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946123673] [2021-12-14 15:40:50,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:50,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:50,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:50,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:50,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:50,562 INFO L87 Difference]: Start difference. First operand 13889 states and 22415 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)