./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash e6c477e3f3753c58922818522be04156e728e59c50f004b5ce835b763e4b3e35 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 20:08:27,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 20:08:27,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 20:08:27,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 20:08:27,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 20:08:27,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 20:08:27,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 20:08:27,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 20:08:27,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 20:08:27,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 20:08:27,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 20:08:27,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 20:08:27,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 20:08:27,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 20:08:27,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 20:08:27,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 20:08:27,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 20:08:27,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 20:08:27,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 20:08:27,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 20:08:27,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 20:08:27,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 20:08:27,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 20:08:27,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 20:08:27,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 20:08:27,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 20:08:27,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 20:08:27,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 20:08:27,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 20:08:27,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 20:08:27,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 20:08:27,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 20:08:27,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 20:08:27,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 20:08:27,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 20:08:27,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 20:08:27,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 20:08:27,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 20:08:27,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 20:08:27,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 20:08:27,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 20:08:27,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 20:08:27,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 20:08:27,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 20:08:27,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 20:08:27,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 20:08:27,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 20:08:27,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 20:08:27,229 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 20:08:27,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 20:08:27,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 20:08:27,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 20:08:27,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 20:08:27,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 20:08:27,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 20:08:27,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 20:08:27,231 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 20:08:27,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 20:08:27,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 20:08:27,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 20:08:27,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 20:08:27,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:08:27,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 20:08:27,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 20:08:27,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 20:08:27,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 20:08:27,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 20:08:27,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 20:08:27,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 20:08:27,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 20:08:27,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 20:08:27,235 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6c477e3f3753c58922818522be04156e728e59c50f004b5ce835b763e4b3e35 [2021-11-02 20:08:27,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 20:08:27,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 20:08:27,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 20:08:27,477 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 20:08:27,478 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 20:08:27,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i [2021-11-02 20:08:27,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd93413f/f0db06c39f964d9db8f98f6bc768e71c/FLAGb7ebb15aa [2021-11-02 20:08:28,243 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 20:08:28,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i [2021-11-02 20:08:28,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd93413f/f0db06c39f964d9db8f98f6bc768e71c/FLAGb7ebb15aa [2021-11-02 20:08:28,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd93413f/f0db06c39f964d9db8f98f6bc768e71c [2021-11-02 20:08:28,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 20:08:28,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 20:08:28,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 20:08:28,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 20:08:28,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 20:08:28,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:28" (1/1) ... [2021-11-02 20:08:28,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483ef2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:28, skipping insertion in model container [2021-11-02 20:08:28,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:28" (1/1) ... [2021-11-02 20:08:28,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 20:08:28,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 20:08:29,657 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i[208384,208397] [2021-11-02 20:08:29,709 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-02 20:08:29,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:08:29,767 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 20:08:30,032 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i[208384,208397] [2021-11-02 20:08:30,037 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-02 20:08:30,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:08:30,139 INFO L208 MainTranslator]: Completed translation [2021-11-02 20:08:30,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30 WrapperNode [2021-11-02 20:08:30,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 20:08:30,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 20:08:30,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 20:08:30,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 20:08:30,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (1/1) ... [2021-11-02 20:08:30,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (1/1) ... [2021-11-02 20:08:30,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 20:08:30,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 20:08:30,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 20:08:30,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 20:08:30,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (1/1) ... [2021-11-02 20:08:30,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (1/1) ... [2021-11-02 20:08:30,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (1/1) ... [2021-11-02 20:08:30,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (1/1) ... [2021-11-02 20:08:30,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (1/1) ... [2021-11-02 20:08:31,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (1/1) ... [2021-11-02 20:08:31,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (1/1) ... [2021-11-02 20:08:31,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 20:08:31,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 20:08:31,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 20:08:31,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 20:08:31,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (1/1) ... [2021-11-02 20:08:31,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:08:31,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:08:31,253 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) [2021-11-02 20:08:31,269 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 [2021-11-02 20:08:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 20:08:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 20:08:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 20:08:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 20:08:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-02 20:08:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 20:08:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 20:08:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 20:08:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 20:08:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 20:08:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 20:08:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 20:08:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 20:08:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 20:08:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 20:08:31,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 20:08:53,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 20:08:53,511 INFO L299 CfgBuilder]: Removed 1941 assume(true) statements. [2021-11-02 20:08:53,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:53 BoogieIcfgContainer [2021-11-02 20:08:53,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 20:08:53,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 20:08:53,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 20:08:53,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 20:08:53,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:08:28" (1/3) ... [2021-11-02 20:08:53,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1194f53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:53, skipping insertion in model container [2021-11-02 20:08:53,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:30" (2/3) ... [2021-11-02 20:08:53,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1194f53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:53, skipping insertion in model container [2021-11-02 20:08:53,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:53" (3/3) ... [2021-11-02 20:08:53,524 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i [2021-11-02 20:08:53,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 20:08:53,532 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 20:08:53,643 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 20:08:53,651 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 [2021-11-02 20:08:53,652 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 20:08:53,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 1970 states, 1968 states have (on average 1.416158536585366) internal successors, (2787), 1969 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:08:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 20:08:53,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:08:53,728 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] [2021-11-02 20:08:53,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:08:53,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:08:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1900913398, now seen corresponding path program 1 times [2021-11-02 20:08:53,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:08:53,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901471730] [2021-11-02 20:08:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:08:53,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:08:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:08:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 20:08:54,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:08:54,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901471730] [2021-11-02 20:08:54,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901471730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:08:54,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:08:54,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:08:54,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750993600] [2021-11-02 20:08:54,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 20:08:54,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:08:54,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 20:08:54,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:08:54,347 INFO L87 Difference]: Start difference. First operand has 1970 states, 1968 states have (on average 1.416158536585366) internal successors, (2787), 1969 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:08:56,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:03,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:06,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:08,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:10,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:09:12,214 INFO L93 Difference]: Finished difference Result 3936 states and 5569 transitions. [2021-11-02 20:09:12,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 20:09:12,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 20:09:12,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:09:12,246 INFO L225 Difference]: With dead ends: 3936 [2021-11-02 20:09:12,247 INFO L226 Difference]: Without dead ends: 1956 [2021-11-02 20:09:12,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:09:12,263 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16325.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17572.75ms IncrementalHoareTripleChecker+Time [2021-11-02 20:09:12,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 2749 Unknown, 0 Unchecked, 17.46ms Time], IncrementalHoareTripleChecker [0 Valid, 2744 Invalid, 5 Unknown, 0 Unchecked, 17572.75ms Time] [2021-11-02 20:09:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-11-02 20:09:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1956. [2021-11-02 20:09:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1955 states have (on average 1.3989769820971867) internal successors, (2735), 1955 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:09:12,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2735 transitions. [2021-11-02 20:09:12,379 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2735 transitions. Word has length 94 [2021-11-02 20:09:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:09:12,379 INFO L470 AbstractCegarLoop]: Abstraction has 1956 states and 2735 transitions. [2021-11-02 20:09:12,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:09:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2735 transitions. [2021-11-02 20:09:12,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 20:09:12,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:09:12,384 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] [2021-11-02 20:09:12,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 20:09:12,385 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:09:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:09:12,386 INFO L85 PathProgramCache]: Analyzing trace with hash 753017488, now seen corresponding path program 1 times [2021-11-02 20:09:12,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:09:12,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173176516] [2021-11-02 20:09:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:09:12,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:09:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:09:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 20:09:12,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:09:12,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173176516] [2021-11-02 20:09:12,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173176516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:09:12,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:09:12,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:09:12,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065436366] [2021-11-02 20:09:12,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:09:12,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:09:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:09:12,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:09:12,773 INFO L87 Difference]: Start difference. First operand 1956 states and 2735 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:09:14,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:29,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:31,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:33,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:36,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:39,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:09:39,282 INFO L93 Difference]: Finished difference Result 3850 states and 5409 transitions. [2021-11-02 20:09:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:09:39,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 20:09:39,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:09:39,291 INFO L225 Difference]: With dead ends: 3850 [2021-11-02 20:09:39,291 INFO L226 Difference]: Without dead ends: 1958 [2021-11-02 20:09:39,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:09:39,295 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 5459 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24516.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.90ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5459 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26165.43ms IncrementalHoareTripleChecker+Time [2021-11-02 20:09:39,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5466 Unknown, 0 Unchecked, 44.90ms Time], IncrementalHoareTripleChecker [2 Valid, 5459 Invalid, 5 Unknown, 0 Unchecked, 26165.43ms Time] [2021-11-02 20:09:39,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2021-11-02 20:09:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1958. [2021-11-02 20:09:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1957 states have (on average 1.398569238630557) internal successors, (2737), 1957 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:09:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2737 transitions. [2021-11-02 20:09:39,335 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2737 transitions. Word has length 94 [2021-11-02 20:09:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:09:39,336 INFO L470 AbstractCegarLoop]: Abstraction has 1958 states and 2737 transitions. [2021-11-02 20:09:39,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:09:39,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2737 transitions. [2021-11-02 20:09:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 20:09:39,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:09:39,338 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] [2021-11-02 20:09:39,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 20:09:39,338 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:09:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:09:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1913471566, now seen corresponding path program 1 times [2021-11-02 20:09:39,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:09:39,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867057870] [2021-11-02 20:09:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:09:39,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:09:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:09:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 20:09:39,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:09:39,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867057870] [2021-11-02 20:09:39,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867057870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:09:39,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:09:39,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:09:39,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195442456] [2021-11-02 20:09:39,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:09:39,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:09:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:09:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:09:39,625 INFO L87 Difference]: Start difference. First operand 1958 states and 2737 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:09:41,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:55,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:57,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:00,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:02,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:04,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:10:07,920 INFO L93 Difference]: Finished difference Result 3847 states and 5405 transitions. [2021-11-02 20:10:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:10:07,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-02 20:10:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:10:07,929 INFO L225 Difference]: With dead ends: 3847 [2021-11-02 20:10:07,929 INFO L226 Difference]: Without dead ends: 1961 [2021-11-02 20:10:07,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:10:07,934 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 5457 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26419.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.69ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5457 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28058.55ms IncrementalHoareTripleChecker+Time [2021-11-02 20:10:07,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5467 Unknown, 0 Unchecked, 29.69ms Time], IncrementalHoareTripleChecker [4 Valid, 5457 Invalid, 6 Unknown, 0 Unchecked, 28058.55ms Time] [2021-11-02 20:10:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2021-11-02 20:10:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1961. [2021-11-02 20:10:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1960 states have (on average 1.3979591836734695) internal successors, (2740), 1960 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:10:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2740 transitions. [2021-11-02 20:10:07,975 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2740 transitions. Word has length 96 [2021-11-02 20:10:07,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:10:07,976 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 2740 transitions. [2021-11-02 20:10:07,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:10:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2740 transitions. [2021-11-02 20:10:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 20:10:07,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:10:07,978 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] [2021-11-02 20:10:07,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 20:10:07,978 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:10:07,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:10:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2028896423, now seen corresponding path program 1 times [2021-11-02 20:10:07,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:10:07,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225436020] [2021-11-02 20:10:07,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:10:07,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:10:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:10:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 20:10:08,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:10:08,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225436020] [2021-11-02 20:10:08,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225436020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:10:08,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:10:08,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:10:08,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526430400] [2021-11-02 20:10:08,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:10:08,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:10:08,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:10:08,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:10:08,236 INFO L87 Difference]: Start difference. First operand 1961 states and 2740 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:10:10,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:20,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:22,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:25,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:32,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:37,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:39,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:10:39,644 INFO L93 Difference]: Finished difference Result 5683 states and 8010 transitions. [2021-11-02 20:10:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:10:39,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-02 20:10:39,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:10:39,661 INFO L225 Difference]: With dead ends: 5683 [2021-11-02 20:10:39,661 INFO L226 Difference]: Without dead ends: 3805 [2021-11-02 20:10:39,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:10:39,668 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2602 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 5465 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28840.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2602 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.01ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5465 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30967.43ms IncrementalHoareTripleChecker+Time [2021-11-02 20:10:39,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2602 Valid, 0 Invalid, 5474 Unknown, 0 Unchecked, 41.01ms Time], IncrementalHoareTripleChecker [3 Valid, 5465 Invalid, 6 Unknown, 0 Unchecked, 30967.43ms Time] [2021-11-02 20:10:39,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2021-11-02 20:10:39,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 3805. [2021-11-02 20:10:39,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3805 states, 3804 states have (on average 1.4077287066246056) internal successors, (5355), 3804 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:10:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 5355 transitions. [2021-11-02 20:10:39,757 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 5355 transitions. Word has length 99 [2021-11-02 20:10:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:10:39,760 INFO L470 AbstractCegarLoop]: Abstraction has 3805 states and 5355 transitions. [2021-11-02 20:10:39,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:10:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 5355 transitions. [2021-11-02 20:10:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 20:10:39,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:10:39,763 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] [2021-11-02 20:10:39,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 20:10:39,764 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:10:39,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:10:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1463635799, now seen corresponding path program 1 times [2021-11-02 20:10:39,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:10:39,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35551369] [2021-11-02 20:10:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:10:39,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:10:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:10:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 20:10:40,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:10:40,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35551369] [2021-11-02 20:10:40,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35551369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:10:40,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:10:40,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:10:40,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58874632] [2021-11-02 20:10:40,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:10:40,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:10:40,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:10:40,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:10:40,026 INFO L87 Difference]: Start difference. First operand 3805 states and 5355 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:10:42,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:48,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:53,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:55,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:58,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:08,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:11:08,832 INFO L93 Difference]: Finished difference Result 7511 states and 10600 transitions. [2021-11-02 20:11:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:11:08,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-02 20:11:08,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:11:08,861 INFO L225 Difference]: With dead ends: 7511 [2021-11-02 20:11:08,861 INFO L226 Difference]: Without dead ends: 7507 [2021-11-02 20:11:08,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:11:08,865 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2616 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 5390 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26279.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2616 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5390 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28393.05ms IncrementalHoareTripleChecker+Time [2021-11-02 20:11:08,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2616 Valid, 0 Invalid, 5395 Unknown, 0 Unchecked, 26.16ms Time], IncrementalHoareTripleChecker [0 Valid, 5390 Invalid, 5 Unknown, 0 Unchecked, 28393.05ms Time] [2021-11-02 20:11:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7507 states. [2021-11-02 20:11:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7507 to 7507. [2021-11-02 20:11:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7507 states, 7506 states have (on average 1.411404209965361) internal successors, (10594), 7506 states have internal predecessors, (10594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:11:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7507 states to 7507 states and 10594 transitions. [2021-11-02 20:11:09,030 INFO L78 Accepts]: Start accepts. Automaton has 7507 states and 10594 transitions. Word has length 103 [2021-11-02 20:11:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:11:09,031 INFO L470 AbstractCegarLoop]: Abstraction has 7507 states and 10594 transitions. [2021-11-02 20:11:09,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:11:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7507 states and 10594 transitions. [2021-11-02 20:11:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 20:11:09,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:11:09,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:11:09,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 20:11:09,040 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:11:09,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:11:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1836495424, now seen corresponding path program 1 times [2021-11-02 20:11:09,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:11:09,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653458006] [2021-11-02 20:11:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:11:09,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:11:09,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 20:11:09,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557666910] [2021-11-02 20:11:09,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:11:09,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:11:09,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:11:09,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:11:09,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 20:11:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:11:09,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 20:11:09,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:11:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 20:11:10,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:11:10,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:11:10,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653458006] [2021-11-02 20:11:10,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 20:11:10,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557666910] [2021-11-02 20:11:10,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557666910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:11:10,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:11:10,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:11:10,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453373801] [2021-11-02 20:11:10,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:11:10,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:11:10,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:11:10,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:11:10,325 INFO L87 Difference]: Start difference. First operand 7507 states and 10594 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:11:12,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:27,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:29,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:11:33,326 INFO L93 Difference]: Finished difference Result 14935 states and 21108 transitions. [2021-11-02 20:11:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:11:33,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-02 20:11:33,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:11:33,352 INFO L225 Difference]: With dead ends: 14935 [2021-11-02 20:11:33,353 INFO L226 Difference]: Without dead ends: 7511 [2021-11-02 20:11:33,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:11:33,368 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 5464 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21235.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5464 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22675.46ms IncrementalHoareTripleChecker+Time [2021-11-02 20:11:33,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5467 Unknown, 0 Unchecked, 22.87ms Time], IncrementalHoareTripleChecker [0 Valid, 5464 Invalid, 3 Unknown, 0 Unchecked, 22675.46ms Time] [2021-11-02 20:11:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7511 states. [2021-11-02 20:11:33,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7511 to 7511. [2021-11-02 20:11:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7511 states, 7510 states have (on average 1.411185086551265) internal successors, (10598), 7510 states have internal predecessors, (10598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:11:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7511 states to 7511 states and 10598 transitions. [2021-11-02 20:11:33,550 INFO L78 Accepts]: Start accepts. Automaton has 7511 states and 10598 transitions. Word has length 142 [2021-11-02 20:11:33,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:11:33,550 INFO L470 AbstractCegarLoop]: Abstraction has 7511 states and 10598 transitions. [2021-11-02 20:11:33,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:11:33,551 INFO L276 IsEmpty]: Start isEmpty. Operand 7511 states and 10598 transitions. [2021-11-02 20:11:33,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 20:11:33,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:11:33,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:11:33,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 20:11:33,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-02 20:11:33,788 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:11:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:11:33,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1483407042, now seen corresponding path program 1 times [2021-11-02 20:11:33,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:11:33,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507840661] [2021-11-02 20:11:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:11:33,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:11:33,873 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 20:11:33,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721689827] [2021-11-02 20:11:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:11:33,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:11:33,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:11:33,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:11:33,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 20:11:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:11:34,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 20:11:34,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:11:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 20:11:35,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:11:35,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:11:35,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507840661] [2021-11-02 20:11:35,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 20:11:35,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721689827] [2021-11-02 20:11:35,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721689827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:11:35,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:11:35,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:11:35,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901146193] [2021-11-02 20:11:35,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:11:35,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:11:35,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:11:35,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:11:35,055 INFO L87 Difference]: Start difference. First operand 7511 states and 10598 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:11:37,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:46,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:59,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:02,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:04,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:06,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:08,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:12:08,714 INFO L93 Difference]: Finished difference Result 22139 states and 31303 transitions. [2021-11-02 20:12:08,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:12:08,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-02 20:12:08,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:12:08,753 INFO L225 Difference]: With dead ends: 22139 [2021-11-02 20:12:08,753 INFO L226 Difference]: Without dead ends: 14711 [2021-11-02 20:12:08,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:12:08,770 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2550 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 5467 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30597.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2550 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.17ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5467 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33154.47ms IncrementalHoareTripleChecker+Time [2021-11-02 20:12:08,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2550 Valid, 0 Invalid, 5475 Unknown, 0 Unchecked, 30.17ms Time], IncrementalHoareTripleChecker [2 Valid, 5467 Invalid, 6 Unknown, 0 Unchecked, 33154.47ms Time] [2021-11-02 20:12:08,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14711 states. [2021-11-02 20:12:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14711 to 14687. [2021-11-02 20:12:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14687 states, 14686 states have (on average 1.4137273593898951) internal successors, (20762), 14686 states have internal predecessors, (20762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:12:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14687 states to 14687 states and 20762 transitions. [2021-11-02 20:12:09,169 INFO L78 Accepts]: Start accepts. Automaton has 14687 states and 20762 transitions. Word has length 142 [2021-11-02 20:12:09,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:12:09,169 INFO L470 AbstractCegarLoop]: Abstraction has 14687 states and 20762 transitions. [2021-11-02 20:12:09,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:12:09,169 INFO L276 IsEmpty]: Start isEmpty. Operand 14687 states and 20762 transitions. [2021-11-02 20:12:09,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-02 20:12:09,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:12:09,181 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:12:09,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 20:12:09,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-02 20:12:09,404 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:12:09,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:12:09,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1198412906, now seen corresponding path program 1 times [2021-11-02 20:12:09,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:12:09,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587303030] [2021-11-02 20:12:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:12:09,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:12:09,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 20:12:09,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464923486] [2021-11-02 20:12:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:12:09,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:12:09,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:12:09,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:12:09,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 20:12:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:12:10,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 20:12:10,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:12:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:12:10,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:12:10,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:12:10,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587303030] [2021-11-02 20:12:10,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 20:12:10,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464923486] [2021-11-02 20:12:10,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464923486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:12:10,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:12:10,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:12:10,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136562458] [2021-11-02 20:12:10,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:12:10,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:12:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:12:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:12:10,741 INFO L87 Difference]: Start difference. First operand 14687 states and 20762 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:12:12,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:22,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:24,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:37,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:39,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:41,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:44,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:12:44,138 INFO L93 Difference]: Finished difference Result 25591 states and 36217 transitions. [2021-11-02 20:12:44,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:12:44,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-02 20:12:44,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:12:44,207 INFO L225 Difference]: With dead ends: 25591 [2021-11-02 20:12:44,207 INFO L226 Difference]: Without dead ends: 25587 [2021-11-02 20:12:44,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:12:44,221 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2559 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 5543 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30161.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.32ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5543 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32816.57ms IncrementalHoareTripleChecker+Time [2021-11-02 20:12:44,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2559 Valid, 0 Invalid, 5551 Unknown, 0 Unchecked, 28.32ms Time], IncrementalHoareTripleChecker [2 Valid, 5543 Invalid, 6 Unknown, 0 Unchecked, 32816.57ms Time] [2021-11-02 20:12:44,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25587 states. [2021-11-02 20:12:44,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25587 to 25585. [2021-11-02 20:12:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25585 states, 25584 states have (on average 1.4153377110694183) internal successors, (36210), 25584 states have internal predecessors, (36210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:12:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25585 states to 25585 states and 36210 transitions. [2021-11-02 20:12:44,924 INFO L78 Accepts]: Start accepts. Automaton has 25585 states and 36210 transitions. Word has length 149 [2021-11-02 20:12:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:12:44,924 INFO L470 AbstractCegarLoop]: Abstraction has 25585 states and 36210 transitions. [2021-11-02 20:12:44,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:12:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 25585 states and 36210 transitions. [2021-11-02 20:12:44,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-02 20:12:44,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:12:44,935 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:12:44,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 20:12:45,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:12:45,164 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:12:45,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:12:45,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1784900294, now seen corresponding path program 1 times [2021-11-02 20:12:45,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:12:45,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026524902] [2021-11-02 20:12:45,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:12:45,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:12:45,366 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 20:12:45,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247161365] [2021-11-02 20:12:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:12:45,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:12:45,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:12:45,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:12:45,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 20:12:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:12:46,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 3094 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 20:12:46,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:12:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:12:47,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:12:47,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:12:47,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026524902] [2021-11-02 20:12:47,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 20:12:47,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247161365] [2021-11-02 20:12:47,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247161365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:12:47,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:12:47,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:12:47,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597647532] [2021-11-02 20:12:47,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:12:47,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:12:47,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:12:47,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:12:47,185 INFO L87 Difference]: Start difference. First operand 25585 states and 36210 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:12:49,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:58,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:01,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:07,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:15,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:17,840 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:13:19,908 INFO L93 Difference]: Finished difference Result 51087 states and 72332 transitions. [2021-11-02 20:13:19,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:13:19,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-02 20:13:19,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:13:20,036 INFO L225 Difference]: With dead ends: 51087 [2021-11-02 20:13:20,036 INFO L226 Difference]: Without dead ends: 51083 [2021-11-02 20:13:20,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:13:20,062 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2584 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 5394 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29310.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2584 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5394 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31941.41ms IncrementalHoareTripleChecker+Time [2021-11-02 20:13:20,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2584 Valid, 0 Invalid, 5399 Unknown, 0 Unchecked, 26.67ms Time], IncrementalHoareTripleChecker [0 Valid, 5394 Invalid, 5 Unknown, 0 Unchecked, 31941.41ms Time] [2021-11-02 20:13:20,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51083 states. [2021-11-02 20:13:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51083 to 51083. [2021-11-02 20:13:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51083 states, 51082 states have (on average 1.4158411965075761) internal successors, (72324), 51082 states have internal predecessors, (72324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:13:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51083 states to 51083 states and 72324 transitions. [2021-11-02 20:13:21,167 INFO L78 Accepts]: Start accepts. Automaton has 51083 states and 72324 transitions. Word has length 153 [2021-11-02 20:13:21,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:13:21,168 INFO L470 AbstractCegarLoop]: Abstraction has 51083 states and 72324 transitions. [2021-11-02 20:13:21,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:13:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 51083 states and 72324 transitions. [2021-11-02 20:13:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-02 20:13:21,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:13:21,180 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:13:21,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 20:13:21,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:13:21,396 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:13:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:13:21,396 INFO L85 PathProgramCache]: Analyzing trace with hash -276179136, now seen corresponding path program 1 times [2021-11-02 20:13:21,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:13:21,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945912804] [2021-11-02 20:13:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:13:21,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:13:21,489 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 20:13:21,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627172262] [2021-11-02 20:13:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:13:21,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:13:21,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:13:21,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:13:21,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 20:13:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:13:22,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 3076 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 20:13:22,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:13:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 20:13:22,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:13:22,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:13:22,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945912804] [2021-11-02 20:13:22,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 20:13:22,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627172262] [2021-11-02 20:13:22,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627172262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:13:22,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:13:22,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:13:22,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167703545] [2021-11-02 20:13:22,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:13:22,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:13:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:13:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:13:22,733 INFO L87 Difference]: Start difference. First operand 51083 states and 72324 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:13:24,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:34,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:37,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:39,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:13:53,633 INFO L93 Difference]: Finished difference Result 65627 states and 92942 transitions. [2021-11-02 20:13:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:13:53,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-02 20:13:53,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:13:53,782 INFO L225 Difference]: With dead ends: 65627 [2021-11-02 20:13:53,783 INFO L226 Difference]: Without dead ends: 65623 [2021-11-02 20:13:53,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:13:53,808 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2556 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 5544 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27460.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.04ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5544 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29959.46ms IncrementalHoareTripleChecker+Time [2021-11-02 20:13:53,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2556 Valid, 0 Invalid, 5550 Unknown, 0 Unchecked, 29.04ms Time], IncrementalHoareTripleChecker [2 Valid, 5544 Invalid, 4 Unknown, 0 Unchecked, 29959.46ms Time] [2021-11-02 20:13:53,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65623 states. [2021-11-02 20:13:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65623 to 65619. [2021-11-02 20:13:55,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65619 states, 65618 states have (on average 1.4162729738791184) internal successors, (92933), 65618 states have internal predecessors, (92933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:13:55,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65619 states to 65619 states and 92933 transitions. [2021-11-02 20:13:55,396 INFO L78 Accepts]: Start accepts. Automaton has 65619 states and 92933 transitions. Word has length 153 [2021-11-02 20:13:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:13:55,397 INFO L470 AbstractCegarLoop]: Abstraction has 65619 states and 92933 transitions. [2021-11-02 20:13:55,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:13:55,397 INFO L276 IsEmpty]: Start isEmpty. Operand 65619 states and 92933 transitions. [2021-11-02 20:13:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-02 20:13:55,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:13:55,411 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:13:55,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-02 20:13:55,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 20:13:55,628 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:13:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:13:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash -336675568, now seen corresponding path program 1 times [2021-11-02 20:13:55,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:13:55,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627474375] [2021-11-02 20:13:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:13:55,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:13:55,710 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 20:13:55,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177405308] [2021-11-02 20:13:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:13:55,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:13:55,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:13:55,712 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:13:55,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 20:13:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:13:56,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 3098 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 20:13:56,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:13:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 20:13:57,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:13:57,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:13:57,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627474375] [2021-11-02 20:13:57,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 20:13:57,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177405308] [2021-11-02 20:13:57,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177405308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:13:57,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:13:57,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:13:57,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496608798] [2021-11-02 20:13:57,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:13:57,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:13:57,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:13:57,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:13:57,629 INFO L87 Difference]: Start difference. First operand 65619 states and 92933 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:13:59,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:09,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:11,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:25,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:28,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:14:31,016 INFO L93 Difference]: Finished difference Result 116607 states and 165168 transitions. [2021-11-02 20:14:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:14:31,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-02 20:14:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:14:31,242 INFO L225 Difference]: With dead ends: 116607 [2021-11-02 20:14:31,242 INFO L226 Difference]: Without dead ends: 116603 [2021-11-02 20:14:31,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:14:31,281 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2582 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 5387 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29136.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5387 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32045.50ms IncrementalHoareTripleChecker+Time [2021-11-02 20:14:31,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2582 Valid, 0 Invalid, 5392 Unknown, 0 Unchecked, 28.83ms Time], IncrementalHoareTripleChecker [0 Valid, 5387 Invalid, 5 Unknown, 0 Unchecked, 32045.50ms Time] [2021-11-02 20:14:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116603 states. [2021-11-02 20:14:33,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116603 to 116603. [2021-11-02 20:14:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116603 states, 116602 states have (on average 1.4164422565650674) internal successors, (165160), 116602 states have internal predecessors, (165160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:14:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116603 states to 116603 states and 165160 transitions. [2021-11-02 20:14:34,170 INFO L78 Accepts]: Start accepts. Automaton has 116603 states and 165160 transitions. Word has length 157 [2021-11-02 20:14:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:14:34,171 INFO L470 AbstractCegarLoop]: Abstraction has 116603 states and 165160 transitions. [2021-11-02 20:14:34,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:14:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 116603 states and 165160 transitions. [2021-11-02 20:14:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-02 20:14:34,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:14:34,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:14:34,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-02 20:14:34,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:14:34,420 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:14:34,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:14:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash 627053018, now seen corresponding path program 1 times [2021-11-02 20:14:34,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:14:34,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110069232] [2021-11-02 20:14:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:14:34,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:14:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:14:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 20:14:34,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:14:34,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110069232] [2021-11-02 20:14:34,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110069232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:14:34,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:14:34,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:14:34,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269564716] [2021-11-02 20:14:34,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:14:34,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:14:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:14:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:14:34,665 INFO L87 Difference]: Start difference. First operand 116603 states and 165160 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:14:36,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:46,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:48,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:51,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:05,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:11,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:15:11,456 INFO L93 Difference]: Finished difference Result 330282 states and 467558 transitions. [2021-11-02 20:15:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:15:11,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-11-02 20:15:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:15:12,132 INFO L225 Difference]: With dead ends: 330282 [2021-11-02 20:15:12,132 INFO L226 Difference]: Without dead ends: 213762 [2021-11-02 20:15:12,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:15:12,288 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2185 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 5547 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30117.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5547 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33232.51ms IncrementalHoareTripleChecker+Time [2021-11-02 20:15:12,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 0 Invalid, 5553 Unknown, 0 Unchecked, 30.98ms Time], IncrementalHoareTripleChecker [1 Valid, 5547 Invalid, 5 Unknown, 0 Unchecked, 33232.51ms Time] [2021-11-02 20:15:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213762 states. [2021-11-02 20:15:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213762 to 213723. [2021-11-02 20:15:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213723 states, 213722 states have (on average 1.4148473250297116) internal successors, (302384), 213722 states have internal predecessors, (302384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:15:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213723 states to 213723 states and 302384 transitions. [2021-11-02 20:15:17,514 INFO L78 Accepts]: Start accepts. Automaton has 213723 states and 302384 transitions. Word has length 172 [2021-11-02 20:15:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:15:17,515 INFO L470 AbstractCegarLoop]: Abstraction has 213723 states and 302384 transitions. [2021-11-02 20:15:17,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:15:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 213723 states and 302384 transitions. [2021-11-02 20:15:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-02 20:15:17,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:15:17,623 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:15:17,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 20:15:17,623 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:15:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:15:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1672719791, now seen corresponding path program 1 times [2021-11-02 20:15:17,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:15:17,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019233197] [2021-11-02 20:15:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:15:17,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:15:17,711 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 20:15:17,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910087368] [2021-11-02 20:15:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:15:17,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:15:17,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:15:17,720 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:15:17,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 20:15:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:15:18,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 3491 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 20:15:18,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:15:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-02 20:15:19,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:15:19,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:15:19,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019233197] [2021-11-02 20:15:19,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 20:15:19,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910087368] [2021-11-02 20:15:19,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910087368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:15:19,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:15:19,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:15:19,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652877085] [2021-11-02 20:15:19,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:15:19,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:15:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:15:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:15:19,361 INFO L87 Difference]: Start difference. First operand 213723 states and 302384 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:15:21,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:30,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:33,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:48,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:51,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:15:58,349 INFO L93 Difference]: Finished difference Result 247087 states and 349621 transitions. [2021-11-02 20:15:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:15:58,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-11-02 20:15:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:15:58,962 INFO L225 Difference]: With dead ends: 247087 [2021-11-02 20:15:58,963 INFO L226 Difference]: Without dead ends: 247083 [2021-11-02 20:15:59,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:15:59,049 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2512 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 5971 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32291.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.27ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5971 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35855.88ms IncrementalHoareTripleChecker+Time [2021-11-02 20:15:59,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2512 Valid, 0 Invalid, 5978 Unknown, 0 Unchecked, 34.27ms Time], IncrementalHoareTripleChecker [2 Valid, 5971 Invalid, 5 Unknown, 0 Unchecked, 35855.88ms Time] [2021-11-02 20:15:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247083 states. [2021-11-02 20:16:03,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247083 to 247083. [2021-11-02 20:16:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247083 states, 247082 states have (on average 1.4149715479071725) internal successors, (349614), 247082 states have internal predecessors, (349614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:16:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247083 states to 247083 states and 349614 transitions. [2021-11-02 20:16:04,588 INFO L78 Accepts]: Start accepts. Automaton has 247083 states and 349614 transitions. Word has length 203 [2021-11-02 20:16:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:16:04,588 INFO L470 AbstractCegarLoop]: Abstraction has 247083 states and 349614 transitions. [2021-11-02 20:16:04,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:16:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 247083 states and 349614 transitions. [2021-11-02 20:16:04,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-02 20:16:04,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:16:04,729 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:16:04,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-02 20:16:04,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:16:04,930 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:16:04,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:16:04,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1585035903, now seen corresponding path program 1 times [2021-11-02 20:16:04,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:16:04,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366221913] [2021-11-02 20:16:04,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:16:04,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:16:05,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 20:16:05,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486060633] [2021-11-02 20:16:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:16:05,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:16:05,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:16:05,474 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:16:05,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 20:16:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:16:06,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 3510 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 20:16:06,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:16:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-02 20:16:07,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:16:07,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:16:07,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366221913] [2021-11-02 20:16:07,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 20:16:07,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486060633] [2021-11-02 20:16:07,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486060633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:16:07,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:16:07,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:16:07,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838246901] [2021-11-02 20:16:07,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:16:07,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:16:07,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:16:07,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:16:07,846 INFO L87 Difference]: Start difference. First operand 247083 states and 349614 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:16:09,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:19,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:21,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:23,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:16:42,329 INFO L93 Difference]: Finished difference Result 373967 states and 529172 transitions. [2021-11-02 20:16:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:16:42,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2021-11-02 20:16:42,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:16:43,254 INFO L225 Difference]: With dead ends: 373967 [2021-11-02 20:16:43,254 INFO L226 Difference]: Without dead ends: 373963 [2021-11-02 20:16:43,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:16:43,388 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2540 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 5387 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26927.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5387 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29850.97ms IncrementalHoareTripleChecker+Time [2021-11-02 20:16:43,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2540 Valid, 0 Invalid, 5391 Unknown, 0 Unchecked, 30.27ms Time], IncrementalHoareTripleChecker [0 Valid, 5387 Invalid, 4 Unknown, 0 Unchecked, 29850.97ms Time] [2021-11-02 20:16:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373963 states. [2021-11-02 20:16:50,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373963 to 373963. [2021-11-02 20:16:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373963 states, 373962 states have (on average 1.4150100812382007) internal successors, (529160), 373962 states have internal predecessors, (529160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:16:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373963 states to 373963 states and 529160 transitions. [2021-11-02 20:16:52,340 INFO L78 Accepts]: Start accepts. Automaton has 373963 states and 529160 transitions. Word has length 205 [2021-11-02 20:16:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:16:52,341 INFO L470 AbstractCegarLoop]: Abstraction has 373963 states and 529160 transitions. [2021-11-02 20:16:52,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:16:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 373963 states and 529160 transitions. [2021-11-02 20:16:52,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-02 20:16:52,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:16:52,473 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:16:52,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 20:16:52,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 20:16:52,675 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:16:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:16:52,676 INFO L85 PathProgramCache]: Analyzing trace with hash 770394017, now seen corresponding path program 1 times [2021-11-02 20:16:52,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:16:52,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180709907] [2021-11-02 20:16:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:16:52,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:16:52,754 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 20:16:52,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571483381] [2021-11-02 20:16:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:16:52,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:16:52,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:16:52,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:16:52,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 20:16:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:16:53,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 3513 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 20:16:53,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:16:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-02 20:16:54,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:16:54,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:16:54,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180709907] [2021-11-02 20:16:54,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 20:16:54,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571483381] [2021-11-02 20:16:54,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571483381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:16:54,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:16:54,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:16:54,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825290256] [2021-11-02 20:16:54,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:16:54,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:16:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:16:54,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:16:54,881 INFO L87 Difference]: Start difference. First operand 373963 states and 529160 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:16:56,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:06,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:08,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:10,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:13,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:30,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:17:36,645 INFO L93 Difference]: Finished difference Result 574379 states and 812756 transitions. [2021-11-02 20:17:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:17:36,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2021-11-02 20:17:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:17:38,277 INFO L225 Difference]: With dead ends: 574379 [2021-11-02 20:17:38,277 INFO L226 Difference]: Without dead ends: 574375 [2021-11-02 20:17:38,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:17:38,507 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2537 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 5382 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31055.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2537 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.93ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5382 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34834.19ms IncrementalHoareTripleChecker+Time [2021-11-02 20:17:38,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2537 Valid, 0 Invalid, 5387 Unknown, 0 Unchecked, 27.93ms Time], IncrementalHoareTripleChecker [0 Valid, 5382 Invalid, 5 Unknown, 0 Unchecked, 34834.19ms Time] [2021-11-02 20:17:39,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574375 states.