./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_label43+token_ring.06.cil-1.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 653a8e34239233d69d9a38d78b85981ab63654836b879da54ad0b88422f00ccf --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:55:17,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:55:17,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:55:17,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:55:17,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:55:17,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:55:17,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:55:17,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:55:17,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:55:17,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:55:17,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:55:17,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:55:17,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:55:17,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:55:17,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:55:17,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:55:17,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:55:17,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:55:17,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:55:17,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:55:17,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:55:17,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:55:17,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:55:17,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:55:17,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:55:17,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:55:17,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:55:17,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:55:17,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:55:17,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:55:17,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:55:17,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:55:17,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:55:17,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:55:17,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:55:17,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:55:17,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:55:17,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:55:17,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:55:17,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:55:17,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:55:17,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:55:17,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:55:17,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:55:17,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:55:17,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:55:17,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:55:17,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:55:17,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:55:17,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:55:17,815 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:55:17,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:55:17,816 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:55:17,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:55:17,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:55:17,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:55:17,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:55:17,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:55:17,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:55:17,817 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:55:17,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:55:17,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:55:17,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:55:17,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:55:17,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:55:17,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:55:17,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:55:17,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:55:17,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:55:17,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:55:17,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:55:17,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:55:17,820 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:55:17,820 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:55:17,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:55:17,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:55:17,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 653a8e34239233d69d9a38d78b85981ab63654836b879da54ad0b88422f00ccf [2021-12-16 01:55:18,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:55:18,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:55:18,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:55:18,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:55:18,080 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:55:18,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c [2021-12-16 01:55:18,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/580ec8159/a73228670fd444488d0bd94800457878/FLAGfc00ee044 [2021-12-16 01:55:18,960 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:55:18,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c [2021-12-16 01:55:19,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/580ec8159/a73228670fd444488d0bd94800457878/FLAGfc00ee044 [2021-12-16 01:55:19,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/580ec8159/a73228670fd444488d0bd94800457878 [2021-12-16 01:55:19,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:55:19,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:55:19,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:55:19,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:55:19,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:55:19,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:55:19" (1/1) ... [2021-12-16 01:55:19,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa1500c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:19, skipping insertion in model container [2021-12-16 01:55:19,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:55:19" (1/1) ... [2021-12-16 01:55:19,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:55:19,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:55:21,215 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_label43+token_ring.06.cil-1.c[381679,381692] [2021-12-16 01:55:21,240 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_label43+token_ring.06.cil-1.c[383339,383352] [2021-12-16 01:55:21,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:55:21,408 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:55:22,185 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_label43+token_ring.06.cil-1.c[381679,381692] [2021-12-16 01:55:22,188 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_label43+token_ring.06.cil-1.c[383339,383352] [2021-12-16 01:55:22,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:55:22,256 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:55:22,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22 WrapperNode [2021-12-16 01:55:22,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:55:22,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:55:22,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:55:22,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:55:22,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (1/1) ... [2021-12-16 01:55:22,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (1/1) ... [2021-12-16 01:55:22,739 INFO L137 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12856 [2021-12-16 01:55:22,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:55:22,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:55:22,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:55:22,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:55:22,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (1/1) ... [2021-12-16 01:55:22,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (1/1) ... [2021-12-16 01:55:22,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (1/1) ... [2021-12-16 01:55:22,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (1/1) ... [2021-12-16 01:55:23,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (1/1) ... [2021-12-16 01:55:23,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (1/1) ... [2021-12-16 01:55:23,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (1/1) ... [2021-12-16 01:55:23,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:55:23,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:55:23,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:55:23,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:55:23,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (1/1) ... [2021-12-16 01:55:23,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:55:23,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:55:23,180 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) [2021-12-16 01:55:23,206 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 [2021-12-16 01:55:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:55:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 01:55:23,221 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 01:55:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 01:55:23,221 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 01:55:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 01:55:23,221 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 01:55:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-16 01:55:23,221 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-16 01:55:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 01:55:23,222 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 01:55:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 01:55:23,222 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 01:55:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 01:55:23,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 01:55:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:55:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:55:23,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:55:23,352 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:55:23,353 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:55:29,351 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:55:29,435 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:55:29,436 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-16 01:55:29,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:55:29 BoogieIcfgContainer [2021-12-16 01:55:29,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:55:29,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:55:29,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:55:29,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:55:29,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:55:19" (1/3) ... [2021-12-16 01:55:29,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adc6903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:55:29, skipping insertion in model container [2021-12-16 01:55:29,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:22" (2/3) ... [2021-12-16 01:55:29,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adc6903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:55:29, skipping insertion in model container [2021-12-16 01:55:29,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:55:29" (3/3) ... [2021-12-16 01:55:29,455 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.06.cil-1.c [2021-12-16 01:55:29,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:55:29,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 01:55:29,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:55:29,529 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 [2021-12-16 01:55:29,530 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 01:55:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-16 01:55:29,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:29,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:29,618 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] [2021-12-16 01:55:29,618 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:29,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:29,624 INFO L85 PathProgramCache]: Analyzing trace with hash 787057146, now seen corresponding path program 1 times [2021-12-16 01:55:29,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:29,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367009878] [2021-12-16 01:55:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:29,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:30,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:30,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:30,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:30,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367009878] [2021-12-16 01:55:30,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367009878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:30,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:30,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:55:30,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112004470] [2021-12-16 01:55:30,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:30,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:55:30,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:30,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:55:30,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:55:30,073 INFO L87 Difference]: Start difference. First operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:31,027 INFO L93 Difference]: Finished difference Result 4911 states and 9054 transitions. [2021-12-16 01:55:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:55:31,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:31,061 INFO L225 Difference]: With dead ends: 4911 [2021-12-16 01:55:31,061 INFO L226 Difference]: Without dead ends: 2431 [2021-12-16 01:55:31,072 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 [2021-12-16 01:55:31,078 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 596 mSDsluCounter, 12341 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 16758 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:31,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 16758 Invalid, 444 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:55:31,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-12-16 01:55:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2355. [2021-12-16 01:55:31,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2325 states have (on average 1.8391397849462365) internal successors, (4276), 2328 states have internal predecessors, (4276), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-16 01:55:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4318 transitions. [2021-12-16 01:55:31,214 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4318 transitions. Word has length 113 [2021-12-16 01:55:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:31,215 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 4318 transitions. [2021-12-16 01:55:31,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4318 transitions. [2021-12-16 01:55:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:31,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:31,220 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] [2021-12-16 01:55:31,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:55:31,221 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:31,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1110439620, now seen corresponding path program 1 times [2021-12-16 01:55:31,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:31,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959078199] [2021-12-16 01:55:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:31,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:31,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:31,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:31,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:31,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959078199] [2021-12-16 01:55:31,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959078199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:31,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:31,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:31,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641125244] [2021-12-16 01:55:31,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:31,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:31,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:31,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:31,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:31,423 INFO L87 Difference]: Start difference. First operand 2355 states and 4318 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:33,355 INFO L93 Difference]: Finished difference Result 2966 states and 5298 transitions. [2021-12-16 01:55:33,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:55:33,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:33,369 INFO L225 Difference]: With dead ends: 2966 [2021-12-16 01:55:33,369 INFO L226 Difference]: Without dead ends: 2746 [2021-12-16 01:55:33,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:55:33,373 INFO L933 BasicCegarLoop]: 4564 mSDtfsCounter, 4790 mSDsluCounter, 17085 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 21649 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:33,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4803 Valid, 21649 Invalid, 1886 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 01:55:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2021-12-16 01:55:33,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2583. [2021-12-16 01:55:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2528 states have (on average 1.8184335443037976) internal successors, (4597), 2533 states have internal predecessors, (4597), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2021-12-16 01:55:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4680 transitions. [2021-12-16 01:55:33,450 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4680 transitions. Word has length 113 [2021-12-16 01:55:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:33,450 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 4680 transitions. [2021-12-16 01:55:33,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4680 transitions. [2021-12-16 01:55:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:33,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:33,453 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] [2021-12-16 01:55:33,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:55:33,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:33,455 INFO L85 PathProgramCache]: Analyzing trace with hash 240945598, now seen corresponding path program 1 times [2021-12-16 01:55:33,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:33,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936546543] [2021-12-16 01:55:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:33,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:33,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:33,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:33,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:33,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:33,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:33,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936546543] [2021-12-16 01:55:33,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936546543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:33,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:33,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:33,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017361568] [2021-12-16 01:55:33,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:33,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:33,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:33,614 INFO L87 Difference]: Start difference. First operand 2583 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:35,388 INFO L93 Difference]: Finished difference Result 3740 states and 6520 transitions. [2021-12-16 01:55:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:55:35,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:35,405 INFO L225 Difference]: With dead ends: 3740 [2021-12-16 01:55:35,405 INFO L226 Difference]: Without dead ends: 3294 [2021-12-16 01:55:35,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:55:35,409 INFO L933 BasicCegarLoop]: 4511 mSDtfsCounter, 4814 mSDsluCounter, 17006 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4827 SdHoareTripleChecker+Valid, 21517 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:35,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4827 Valid, 21517 Invalid, 1813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 01:55:35,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2021-12-16 01:55:35,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3003. [2021-12-16 01:55:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2904 states have (on average 1.7837465564738293) internal successors, (5180), 2911 states have internal predecessors, (5180), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2021-12-16 01:55:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 5333 transitions. [2021-12-16 01:55:35,512 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 5333 transitions. Word has length 113 [2021-12-16 01:55:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:35,513 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 5333 transitions. [2021-12-16 01:55:35,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 5333 transitions. [2021-12-16 01:55:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:35,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:35,518 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] [2021-12-16 01:55:35,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:55:35,519 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1378029316, now seen corresponding path program 1 times [2021-12-16 01:55:35,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:35,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993952727] [2021-12-16 01:55:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:35,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:35,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:35,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:35,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:35,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:35,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993952727] [2021-12-16 01:55:35,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993952727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:35,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:35,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:35,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339250330] [2021-12-16 01:55:35,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:35,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:35,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:35,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:35,650 INFO L87 Difference]: Start difference. First operand 3003 states and 5333 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:37,457 INFO L93 Difference]: Finished difference Result 5254 states and 8905 transitions. [2021-12-16 01:55:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:55:37,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:37,482 INFO L225 Difference]: With dead ends: 5254 [2021-12-16 01:55:37,484 INFO L226 Difference]: Without dead ends: 4388 [2021-12-16 01:55:37,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:55:37,498 INFO L933 BasicCegarLoop]: 4555 mSDtfsCounter, 4789 mSDsluCounter, 17077 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21632 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:37,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21632 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 01:55:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2021-12-16 01:55:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 3845. [2021-12-16 01:55:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3658 states have (on average 1.7353745215965009) internal successors, (6348), 3669 states have internal predecessors, (6348), 129 states have call successors, (129), 49 states have call predecessors, (129), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-16 01:55:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 6647 transitions. [2021-12-16 01:55:37,643 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 6647 transitions. Word has length 113 [2021-12-16 01:55:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:37,643 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 6647 transitions. [2021-12-16 01:55:37,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 6647 transitions. [2021-12-16 01:55:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:37,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:37,646 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] [2021-12-16 01:55:37,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:55:37,647 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2033428990, now seen corresponding path program 1 times [2021-12-16 01:55:37,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:37,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505157308] [2021-12-16 01:55:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:37,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:37,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:37,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:37,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:37,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505157308] [2021-12-16 01:55:37,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505157308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:37,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:37,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:37,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38685948] [2021-12-16 01:55:37,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:37,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:37,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:37,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:37,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:37,760 INFO L87 Difference]: Start difference. First operand 3845 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:39,411 INFO L93 Difference]: Finished difference Result 8280 states and 13689 transitions. [2021-12-16 01:55:39,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:55:39,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:39,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:39,448 INFO L225 Difference]: With dead ends: 8280 [2021-12-16 01:55:39,448 INFO L226 Difference]: Without dead ends: 6572 [2021-12-16 01:55:39,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:55:39,459 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 4789 mSDsluCounter, 17077 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21629 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:39,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21629 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 01:55:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2021-12-16 01:55:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5535. [2021-12-16 01:55:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5172 states have (on average 1.6805877803557618) internal successors, (8692), 5191 states have internal predecessors, (8692), 249 states have call successors, (249), 97 states have call predecessors, (249), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2021-12-16 01:55:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 9301 transitions. [2021-12-16 01:55:39,696 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 9301 transitions. Word has length 113 [2021-12-16 01:55:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:39,697 INFO L470 AbstractCegarLoop]: Abstraction has 5535 states and 9301 transitions. [2021-12-16 01:55:39,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:39,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 9301 transitions. [2021-12-16 01:55:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:39,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:39,705 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] [2021-12-16 01:55:39,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:55:39,705 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:39,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:39,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2004928700, now seen corresponding path program 1 times [2021-12-16 01:55:39,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:39,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178530730] [2021-12-16 01:55:39,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:39,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:39,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:39,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:39,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:39,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:39,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178530730] [2021-12-16 01:55:39,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178530730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:39,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:39,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:39,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752373323] [2021-12-16 01:55:39,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:39,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:39,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:39,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:39,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:39,809 INFO L87 Difference]: Start difference. First operand 5535 states and 9301 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:41,501 INFO L93 Difference]: Finished difference Result 14330 states and 23313 transitions. [2021-12-16 01:55:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:55:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:41,550 INFO L225 Difference]: With dead ends: 14330 [2021-12-16 01:55:41,550 INFO L226 Difference]: Without dead ends: 10932 [2021-12-16 01:55:41,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:55:41,564 INFO L933 BasicCegarLoop]: 4549 mSDtfsCounter, 4789 mSDsluCounter, 17077 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21626 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:41,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21626 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 01:55:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2021-12-16 01:55:41,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 8929. [2021-12-16 01:55:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8929 states, 8214 states have (on average 1.6313610908205503) internal successors, (13400), 8249 states have internal predecessors, (13400), 489 states have call successors, (489), 193 states have call predecessors, (489), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2021-12-16 01:55:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 14683 transitions. [2021-12-16 01:55:41,898 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 14683 transitions. Word has length 113 [2021-12-16 01:55:41,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:41,898 INFO L470 AbstractCegarLoop]: Abstraction has 8929 states and 14683 transitions. [2021-12-16 01:55:41,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:41,899 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 14683 transitions. [2021-12-16 01:55:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:41,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:41,906 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] [2021-12-16 01:55:41,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:55:41,906 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:41,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:41,910 INFO L85 PathProgramCache]: Analyzing trace with hash 64346686, now seen corresponding path program 1 times [2021-12-16 01:55:41,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:41,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425964599] [2021-12-16 01:55:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:41,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:41,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:41,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:42,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:42,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:42,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425964599] [2021-12-16 01:55:42,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425964599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:42,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:42,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:42,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994672312] [2021-12-16 01:55:42,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:42,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:42,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:42,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:42,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:42,018 INFO L87 Difference]: Start difference. First operand 8929 states and 14683 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:44,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:44,039 INFO L93 Difference]: Finished difference Result 26428 states and 42749 transitions. [2021-12-16 01:55:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:55:44,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:44,125 INFO L225 Difference]: With dead ends: 26428 [2021-12-16 01:55:44,125 INFO L226 Difference]: Without dead ends: 19636 [2021-12-16 01:55:44,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:55:44,160 INFO L933 BasicCegarLoop]: 4546 mSDtfsCounter, 4789 mSDsluCounter, 17077 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21623 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:44,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21623 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 01:55:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2021-12-16 01:55:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 15747. [2021-12-16 01:55:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5954773869346734) internal successors, (22860), 14395 states have internal predecessors, (22860), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2021-12-16 01:55:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25653 transitions. [2021-12-16 01:55:44,885 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25653 transitions. Word has length 113 [2021-12-16 01:55:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:44,885 INFO L470 AbstractCegarLoop]: Abstraction has 15747 states and 25653 transitions. [2021-12-16 01:55:44,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25653 transitions. [2021-12-16 01:55:44,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:44,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:44,897 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] [2021-12-16 01:55:44,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:55:44,897 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1941409916, now seen corresponding path program 1 times [2021-12-16 01:55:44,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:44,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927531435] [2021-12-16 01:55:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:44,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:44,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:45,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:45,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927531435] [2021-12-16 01:55:45,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927531435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:45,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:45,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:45,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964986440] [2021-12-16 01:55:45,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:45,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:45,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:45,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:45,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:45,008 INFO L87 Difference]: Start difference. First operand 15747 states and 25653 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:46,426 INFO L93 Difference]: Finished difference Result 33453 states and 54776 transitions. [2021-12-16 01:55:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:55:46,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:46,490 INFO L225 Difference]: With dead ends: 33453 [2021-12-16 01:55:46,491 INFO L226 Difference]: Without dead ends: 19841 [2021-12-16 01:55:46,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:55:46,539 INFO L933 BasicCegarLoop]: 4316 mSDtfsCounter, 4600 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 20730 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:46,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4614 Valid, 20730 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:55:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19841 states. [2021-12-16 01:55:47,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19841 to 15747. [2021-12-16 01:55:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5909408151870463) internal successors, (22795), 14395 states have internal predecessors, (22795), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2021-12-16 01:55:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25588 transitions. [2021-12-16 01:55:47,201 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25588 transitions. Word has length 113 [2021-12-16 01:55:47,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:47,202 INFO L470 AbstractCegarLoop]: Abstraction has 15747 states and 25588 transitions. [2021-12-16 01:55:47,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25588 transitions. [2021-12-16 01:55:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:47,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:47,213 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] [2021-12-16 01:55:47,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:55:47,214 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:47,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:47,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1170676350, now seen corresponding path program 1 times [2021-12-16 01:55:47,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:47,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266604462] [2021-12-16 01:55:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:47,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:47,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:47,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:47,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:47,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:47,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266604462] [2021-12-16 01:55:47,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266604462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:47,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:47,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:47,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357106563] [2021-12-16 01:55:47,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:47,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:47,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:47,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:47,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:47,316 INFO L87 Difference]: Start difference. First operand 15747 states and 25588 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:48,819 INFO L93 Difference]: Finished difference Result 33326 states and 54329 transitions. [2021-12-16 01:55:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:55:48,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:48,894 INFO L225 Difference]: With dead ends: 33326 [2021-12-16 01:55:48,895 INFO L226 Difference]: Without dead ends: 19714 [2021-12-16 01:55:48,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:55:48,938 INFO L933 BasicCegarLoop]: 4310 mSDtfsCounter, 4597 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 20724 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:48,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4611 Valid, 20724 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:55:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19714 states. [2021-12-16 01:55:49,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19714 to 15747. [2021-12-16 01:55:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5864042434394192) internal successors, (22730), 14395 states have internal predecessors, (22730), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2021-12-16 01:55:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25523 transitions. [2021-12-16 01:55:49,725 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25523 transitions. Word has length 113 [2021-12-16 01:55:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:49,725 INFO L470 AbstractCegarLoop]: Abstraction has 15747 states and 25523 transitions. [2021-12-16 01:55:49,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:49,726 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25523 transitions. [2021-12-16 01:55:49,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:49,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:49,738 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] [2021-12-16 01:55:49,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:55:49,739 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:49,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:49,739 INFO L85 PathProgramCache]: Analyzing trace with hash 584400128, now seen corresponding path program 1 times [2021-12-16 01:55:49,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:49,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038036470] [2021-12-16 01:55:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:49,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:49,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:49,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:49,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:49,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038036470] [2021-12-16 01:55:49,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038036470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:49,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:49,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:49,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896759124] [2021-12-16 01:55:49,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:49,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:49,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:49,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:49,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:49,860 INFO L87 Difference]: Start difference. First operand 15747 states and 25523 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:52,769 INFO L93 Difference]: Finished difference Result 53887 states and 86573 transitions. [2021-12-16 01:55:52,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:55:52,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:52,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:52,924 INFO L225 Difference]: With dead ends: 53887 [2021-12-16 01:55:52,924 INFO L226 Difference]: Without dead ends: 40277 [2021-12-16 01:55:52,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:55:52,976 INFO L933 BasicCegarLoop]: 4492 mSDtfsCounter, 4943 mSDsluCounter, 17001 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4963 SdHoareTripleChecker+Valid, 21493 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:52,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4963 Valid, 21493 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 01:55:53,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40277 states. [2021-12-16 01:55:54,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40277 to 29444. [2021-12-16 01:55:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29444 states, 26681 states have (on average 1.5644466099471535) internal successors, (41741), 26812 states have internal predecessors, (41741), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2021-12-16 01:55:54,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29444 states to 29444 states and 47912 transitions. [2021-12-16 01:55:54,370 INFO L78 Accepts]: Start accepts. Automaton has 29444 states and 47912 transitions. Word has length 113 [2021-12-16 01:55:54,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:54,371 INFO L470 AbstractCegarLoop]: Abstraction has 29444 states and 47912 transitions. [2021-12-16 01:55:54,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:54,371 INFO L276 IsEmpty]: Start isEmpty. Operand 29444 states and 47912 transitions. [2021-12-16 01:55:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:54,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:54,395 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] [2021-12-16 01:55:54,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:55:54,396 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1374174658, now seen corresponding path program 1 times [2021-12-16 01:55:54,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:54,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718122131] [2021-12-16 01:55:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:54,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:54,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:54,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:54,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:54,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718122131] [2021-12-16 01:55:54,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718122131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:54,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:54,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:54,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464806127] [2021-12-16 01:55:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:54,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:54,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:54,500 INFO L87 Difference]: Start difference. First operand 29444 states and 47912 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:55:56,401 INFO L93 Difference]: Finished difference Result 64112 states and 105619 transitions. [2021-12-16 01:55:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:55:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:55:56,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:55:56,516 INFO L225 Difference]: With dead ends: 64112 [2021-12-16 01:55:56,516 INFO L226 Difference]: Without dead ends: 36803 [2021-12-16 01:55:56,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:55:56,607 INFO L933 BasicCegarLoop]: 4303 mSDtfsCounter, 4690 mSDsluCounter, 12331 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4704 SdHoareTripleChecker+Valid, 16634 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:55:56,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4704 Valid, 16634 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:55:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36803 states. [2021-12-16 01:55:58,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36803 to 29444. [2021-12-16 01:55:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29444 states, 26681 states have (on average 1.5596117087065702) internal successors, (41612), 26812 states have internal predecessors, (41612), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2021-12-16 01:55:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29444 states to 29444 states and 47783 transitions. [2021-12-16 01:55:58,488 INFO L78 Accepts]: Start accepts. Automaton has 29444 states and 47783 transitions. Word has length 113 [2021-12-16 01:55:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:55:58,489 INFO L470 AbstractCegarLoop]: Abstraction has 29444 states and 47783 transitions. [2021-12-16 01:55:58,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:55:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 29444 states and 47783 transitions. [2021-12-16 01:55:58,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:55:58,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:55:58,515 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] [2021-12-16 01:55:58,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:55:58,516 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:55:58,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:55:58,516 INFO L85 PathProgramCache]: Analyzing trace with hash 502308160, now seen corresponding path program 1 times [2021-12-16 01:55:58,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:55:58,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866061979] [2021-12-16 01:55:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:55:58,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:55:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:58,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:55:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:58,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:55:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:58,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:55:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:58,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:55:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:58,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:55:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:55:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:55:58,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:55:58,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866061979] [2021-12-16 01:55:58,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866061979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:55:58,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:55:58,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:55:58,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053090697] [2021-12-16 01:55:58,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:55:58,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:55:58,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:55:58,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:55:58,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:55:58,610 INFO L87 Difference]: Start difference. First operand 29444 states and 47783 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:56:01,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:01,022 INFO L93 Difference]: Finished difference Result 63984 states and 104977 transitions. [2021-12-16 01:56:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:56:01,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:56:01,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:01,142 INFO L225 Difference]: With dead ends: 63984 [2021-12-16 01:56:01,143 INFO L226 Difference]: Without dead ends: 36675 [2021-12-16 01:56:01,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:56:01,289 INFO L933 BasicCegarLoop]: 4299 mSDtfsCounter, 4594 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 20713 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:01,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4608 Valid, 20713 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:56:01,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36675 states. [2021-12-16 01:56:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36675 to 29444. [2021-12-16 01:56:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29444 states, 26681 states have (on average 1.5547768074659871) internal successors, (41483), 26812 states have internal predecessors, (41483), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2021-12-16 01:56:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29444 states to 29444 states and 47654 transitions. [2021-12-16 01:56:02,613 INFO L78 Accepts]: Start accepts. Automaton has 29444 states and 47654 transitions. Word has length 113 [2021-12-16 01:56:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:02,613 INFO L470 AbstractCegarLoop]: Abstraction has 29444 states and 47654 transitions. [2021-12-16 01:56:02,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:56:02,613 INFO L276 IsEmpty]: Start isEmpty. Operand 29444 states and 47654 transitions. [2021-12-16 01:56:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 01:56:02,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:02,634 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] [2021-12-16 01:56:02,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:56:02,634 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:02,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:02,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1376822786, now seen corresponding path program 1 times [2021-12-16 01:56:02,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:02,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352424739] [2021-12-16 01:56:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:02,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 01:56:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 01:56:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 01:56:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 01:56:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:02,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:02,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352424739] [2021-12-16 01:56:02,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352424739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:02,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:02,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:02,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714202693] [2021-12-16 01:56:02,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:02,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:02,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:02,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:02,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:02,732 INFO L87 Difference]: Start difference. First operand 29444 states and 47654 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:56:07,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:07,414 INFO L93 Difference]: Finished difference Result 99522 states and 161466 transitions. [2021-12-16 01:56:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:56:07,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-16 01:56:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:07,745 INFO L225 Difference]: With dead ends: 99522 [2021-12-16 01:56:07,746 INFO L226 Difference]: Without dead ends: 72215 [2021-12-16 01:56:07,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:56:07,803 INFO L933 BasicCegarLoop]: 4518 mSDtfsCounter, 4793 mSDsluCounter, 17069 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4805 SdHoareTripleChecker+Valid, 21587 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:07,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4805 Valid, 21587 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 01:56:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72215 states.