/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 14:15:09,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 14:15:09,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 14:15:09,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 14:15:09,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 14:15:09,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 14:15:09,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 14:15:09,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 14:15:09,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 14:15:09,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 14:15:09,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 14:15:09,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 14:15:09,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 14:15:09,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 14:15:09,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 14:15:09,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 14:15:09,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 14:15:09,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 14:15:09,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 14:15:09,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 14:15:09,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 14:15:09,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 14:15:09,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 14:15:09,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 14:15:09,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 14:15:09,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 14:15:09,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 14:15:09,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 14:15:09,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 14:15:09,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 14:15:09,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 14:15:09,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 14:15:09,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 14:15:09,516 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 14:15:09,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 14:15:09,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 14:15:09,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 14:15:09,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 14:15:09,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 14:15:09,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 14:15:09,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 14:15:09,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 14:15:09,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 14:15:09,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 14:15:09,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 14:15:09,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 14:15:09,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 14:15:09,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 14:15:09,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 14:15:09,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 14:15:09,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 14:15:09,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 14:15:09,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 14:15:09,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 14:15:09,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 14:15:09,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 14:15:09,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 14:15:09,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 14:15:09,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 14:15:09,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 14:15:09,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 14:15:09,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 14:15:09,929 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 14:15:09,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-23 14:15:10,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d6016e4/9b3ebf827adc474fbf8f3a968962aeb4/FLAG41dde02a4 [2021-02-23 14:15:10,898 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 14:15:10,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-23 14:15:10,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d6016e4/9b3ebf827adc474fbf8f3a968962aeb4/FLAG41dde02a4 [2021-02-23 14:15:10,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d6016e4/9b3ebf827adc474fbf8f3a968962aeb4 [2021-02-23 14:15:10,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 14:15:11,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 14:15:11,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 14:15:11,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 14:15:11,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 14:15:11,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 02:15:10" (1/1) ... [2021-02-23 14:15:11,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9d3681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:11, skipping insertion in model container [2021-02-23 14:15:11,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 02:15:10" (1/1) ... [2021-02-23 14:15:11,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 14:15:11,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 14:15:11,915 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34763,34776] [2021-02-23 14:15:11,940 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35653,35666] [2021-02-23 14:15:11,976 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37541,37554] [2021-02-23 14:15:11,998 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38431,38444] [2021-02-23 14:15:12,050 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41262,41275] [2021-02-23 14:15:12,074 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42155,42168] [2021-02-23 14:15:12,115 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[44046,44059] [2021-02-23 14:15:12,146 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[45323,45336] [2021-02-23 14:15:12,331 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61111,61124] [2021-02-23 14:15:12,350 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[62004,62017] [2021-02-23 14:15:12,381 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63895,63908] [2021-02-23 14:15:12,451 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[68410,68423] [2021-02-23 14:15:12,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 14:15:12,633 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 14:15:13,038 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34763,34776] [2021-02-23 14:15:13,055 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35653,35666] [2021-02-23 14:15:13,077 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37541,37554] [2021-02-23 14:15:13,091 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38431,38444] [2021-02-23 14:15:13,129 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41262,41275] [2021-02-23 14:15:13,147 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42155,42168] [2021-02-23 14:15:13,178 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[44046,44059] [2021-02-23 14:15:13,203 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[45323,45336] [2021-02-23 14:15:13,386 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61111,61124] [2021-02-23 14:15:13,405 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[62004,62017] [2021-02-23 14:15:13,434 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63895,63908] [2021-02-23 14:15:13,500 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[68410,68423] [2021-02-23 14:15:13,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 14:15:13,669 INFO L208 MainTranslator]: Completed translation [2021-02-23 14:15:13,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:13 WrapperNode [2021-02-23 14:15:13,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 14:15:13,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 14:15:13,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 14:15:13,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 14:15:13,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:13" (1/1) ... [2021-02-23 14:15:13,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:13" (1/1) ... [2021-02-23 14:15:13,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:13" (1/1) ... [2021-02-23 14:15:13,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:13" (1/1) ... [2021-02-23 14:15:13,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:13" (1/1) ... [2021-02-23 14:15:13,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:13" (1/1) ... [2021-02-23 14:15:13,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:13" (1/1) ... [2021-02-23 14:15:13,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 14:15:13,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 14:15:13,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 14:15:13,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 14:15:13,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 14:15:14,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 14:15:14,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 14:15:14,028 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 14:15:14,028 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 14:15:14,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 14:15:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 14:15:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 14:15:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 14:15:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 14:15:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-23 14:15:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2021-02-23 14:15:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 14:15:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-23 14:15:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 14:15:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-23 14:15:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-23 14:15:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-23 14:15:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-23 14:15:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-23 14:15:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2021-02-23 14:15:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-23 14:15:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 14:15:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 14:15:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 14:15:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 14:15:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 14:15:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 14:15:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 14:15:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 14:15:17,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 14:15:17,747 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 14:15:17,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 02:15:17 BoogieIcfgContainer [2021-02-23 14:15:17,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 14:15:17,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 14:15:17,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 14:15:17,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 14:15:17,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 02:15:10" (1/3) ... [2021-02-23 14:15:17,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b956d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 02:15:17, skipping insertion in model container [2021-02-23 14:15:17,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:15:13" (2/3) ... [2021-02-23 14:15:17,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b956d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 02:15:17, skipping insertion in model container [2021-02-23 14:15:17,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 02:15:17" (3/3) ... [2021-02-23 14:15:17,760 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-23 14:15:17,767 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 14:15:17,773 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2021-02-23 14:15:17,793 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-02-23 14:15:17,828 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 14:15:17,828 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 14:15:17,829 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 14:15:17,829 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 14:15:17,829 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 14:15:17,829 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 14:15:17,829 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 14:15:17,829 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 14:15:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2021-02-23 14:15:17,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-02-23 14:15:17,912 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:15:17,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:15:17,914 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:15:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:15:17,921 INFO L82 PathProgramCache]: Analyzing trace with hash -766055028, now seen corresponding path program 1 times [2021-02-23 14:15:17,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:15:17,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751947620] [2021-02-23 14:15:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:15:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:15:18,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:18,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:18,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:18,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:15:18,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:18,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:19,939 WARN L202 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:15:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:15:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:15:19,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:19,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:15:20,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751947620] [2021-02-23 14:15:20,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:15:20,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:15:20,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290534760] [2021-02-23 14:15:20,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:15:20,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:15:20,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:15:20,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:15:20,205 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 4 states. [2021-02-23 14:15:21,164 WARN L202 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2021-02-23 14:15:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:15:29,432 INFO L93 Difference]: Finished difference Result 1807 states and 3208 transitions. [2021-02-23 14:15:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:15:29,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2021-02-23 14:15:29,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:15:29,471 INFO L225 Difference]: With dead ends: 1807 [2021-02-23 14:15:29,471 INFO L226 Difference]: Without dead ends: 1529 [2021-02-23 14:15:29,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:15:29,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-02-23 14:15:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2021-02-23 14:15:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2021-02-23 14:15:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2336 transitions. [2021-02-23 14:15:29,649 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2336 transitions. Word has length 327 [2021-02-23 14:15:29,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:15:29,651 INFO L480 AbstractCegarLoop]: Abstraction has 1527 states and 2336 transitions. [2021-02-23 14:15:29,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:15:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2336 transitions. [2021-02-23 14:15:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-02-23 14:15:29,661 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:15:29,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:15:29,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 14:15:29,662 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:15:29,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:15:29,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1649642111, now seen corresponding path program 1 times [2021-02-23 14:15:29,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:15:29,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343895485] [2021-02-23 14:15:29,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:15:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:15:30,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:30,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:30,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:30,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 14:15:30,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:30,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:30,952 WARN L202 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:15:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:15:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:15:30,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:30,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:15:31,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343895485] [2021-02-23 14:15:31,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:15:31,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:15:31,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853090743] [2021-02-23 14:15:31,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:15:31,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:15:31,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:15:31,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:15:31,141 INFO L87 Difference]: Start difference. First operand 1527 states and 2336 transitions. Second operand 4 states. [2021-02-23 14:15:32,115 WARN L202 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2021-02-23 14:15:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:15:39,402 INFO L93 Difference]: Finished difference Result 2982 states and 4621 transitions. [2021-02-23 14:15:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:15:39,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2021-02-23 14:15:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:15:39,420 INFO L225 Difference]: With dead ends: 2982 [2021-02-23 14:15:39,420 INFO L226 Difference]: Without dead ends: 2611 [2021-02-23 14:15:39,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:15:39,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-02-23 14:15:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2609. [2021-02-23 14:15:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2609 states. [2021-02-23 14:15:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 4019 transitions. [2021-02-23 14:15:39,539 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 4019 transitions. Word has length 327 [2021-02-23 14:15:39,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:15:39,541 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 4019 transitions. [2021-02-23 14:15:39,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:15:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 4019 transitions. [2021-02-23 14:15:39,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-02-23 14:15:39,554 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:15:39,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:15:39,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 14:15:39,555 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:15:39,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:15:39,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1649980735, now seen corresponding path program 1 times [2021-02-23 14:15:39,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:15:39,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678517578] [2021-02-23 14:15:39,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:15:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:15:40,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:40,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:40,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:40,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 14:15:40,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:40,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 14:15:40,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:40,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:41,105 WARN L202 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:15:41,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:15:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:15:41,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:41,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:15:41,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678517578] [2021-02-23 14:15:41,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:15:41,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 14:15:41,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557868432] [2021-02-23 14:15:41,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 14:15:41,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:15:41,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 14:15:41,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:15:41,334 INFO L87 Difference]: Start difference. First operand 2609 states and 4019 transitions. Second operand 5 states. [2021-02-23 14:15:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:15:51,398 INFO L93 Difference]: Finished difference Result 7717 states and 11876 transitions. [2021-02-23 14:15:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:15:51,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2021-02-23 14:15:51,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:15:51,426 INFO L225 Difference]: With dead ends: 7717 [2021-02-23 14:15:51,426 INFO L226 Difference]: Without dead ends: 5123 [2021-02-23 14:15:51,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 14:15:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2021-02-23 14:15:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 4916. [2021-02-23 14:15:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4916 states. [2021-02-23 14:15:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 7571 transitions. [2021-02-23 14:15:51,626 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 7571 transitions. Word has length 327 [2021-02-23 14:15:51,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:15:51,627 INFO L480 AbstractCegarLoop]: Abstraction has 4916 states and 7571 transitions. [2021-02-23 14:15:51,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 14:15:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 7571 transitions. [2021-02-23 14:15:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-02-23 14:15:51,640 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:15:51,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:15:51,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 14:15:51,641 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:15:51,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:15:51,643 INFO L82 PathProgramCache]: Analyzing trace with hash 802027803, now seen corresponding path program 1 times [2021-02-23 14:15:51,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:15:51,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095610152] [2021-02-23 14:15:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:15:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:15:51,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:51,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:51,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:51,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 14:15:51,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:51,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:52,850 WARN L202 SmtUtils]: Spent 966.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:15:52,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:15:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:15:52,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:15:52,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:15:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:15:53,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095610152] [2021-02-23 14:15:53,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:15:53,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:15:53,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152402478] [2021-02-23 14:15:53,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:15:53,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:15:53,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:15:53,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:15:53,012 INFO L87 Difference]: Start difference. First operand 4916 states and 7571 transitions. Second operand 4 states. [2021-02-23 14:16:04,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:16:04,686 INFO L93 Difference]: Finished difference Result 14441 states and 22189 transitions. [2021-02-23 14:16:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 14:16:04,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2021-02-23 14:16:04,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:16:04,734 INFO L225 Difference]: With dead ends: 14441 [2021-02-23 14:16:04,735 INFO L226 Difference]: Without dead ends: 9654 [2021-02-23 14:16:04,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:16:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9654 states. [2021-02-23 14:16:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9654 to 9447. [2021-02-23 14:16:05,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9447 states. [2021-02-23 14:16:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9447 states to 9447 states and 14507 transitions. [2021-02-23 14:16:05,117 INFO L78 Accepts]: Start accepts. Automaton has 9447 states and 14507 transitions. Word has length 329 [2021-02-23 14:16:05,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:16:05,117 INFO L480 AbstractCegarLoop]: Abstraction has 9447 states and 14507 transitions. [2021-02-23 14:16:05,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:16:05,118 INFO L276 IsEmpty]: Start isEmpty. Operand 9447 states and 14507 transitions. [2021-02-23 14:16:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-02-23 14:16:05,142 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:16:05,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:16:05,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 14:16:05,143 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:16:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:16:05,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1387510922, now seen corresponding path program 1 times [2021-02-23 14:16:05,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:16:05,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713494330] [2021-02-23 14:16:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:16:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:16:05,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:05,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:05,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:05,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 14:16:05,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:05,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:06,081 WARN L202 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:16:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:16:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:16:06,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:06,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:16:06,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713494330] [2021-02-23 14:16:06,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:16:06,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:16:06,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074277032] [2021-02-23 14:16:06,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:16:06,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:16:06,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:16:06,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:16:06,257 INFO L87 Difference]: Start difference. First operand 9447 states and 14507 transitions. Second operand 4 states. [2021-02-23 14:16:18,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:16:18,162 INFO L93 Difference]: Finished difference Result 28266 states and 43397 transitions. [2021-02-23 14:16:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 14:16:18,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2021-02-23 14:16:18,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:16:18,222 INFO L225 Difference]: With dead ends: 28266 [2021-02-23 14:16:18,223 INFO L226 Difference]: Without dead ends: 18861 [2021-02-23 14:16:18,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:16:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18861 states. [2021-02-23 14:16:18,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18861 to 9466. [2021-02-23 14:16:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9466 states. [2021-02-23 14:16:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9466 states to 9466 states and 14535 transitions. [2021-02-23 14:16:18,807 INFO L78 Accepts]: Start accepts. Automaton has 9466 states and 14535 transitions. Word has length 329 [2021-02-23 14:16:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:16:18,807 INFO L480 AbstractCegarLoop]: Abstraction has 9466 states and 14535 transitions. [2021-02-23 14:16:18,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:16:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 9466 states and 14535 transitions. [2021-02-23 14:16:18,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-02-23 14:16:18,827 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:16:18,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:16:18,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 14:16:18,828 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:16:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:16:18,829 INFO L82 PathProgramCache]: Analyzing trace with hash 545918961, now seen corresponding path program 1 times [2021-02-23 14:16:18,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:16:18,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576945039] [2021-02-23 14:16:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:16:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:16:18,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:18,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:18,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:18,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 14:16:18,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:18,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:19,793 WARN L202 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:16:19,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:16:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:16:19,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:19,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:16:19,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576945039] [2021-02-23 14:16:19,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:16:19,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:16:19,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408351133] [2021-02-23 14:16:19,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:16:19,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:16:19,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:16:19,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:16:19,910 INFO L87 Difference]: Start difference. First operand 9466 states and 14535 transitions. Second operand 4 states. [2021-02-23 14:16:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:16:32,371 INFO L93 Difference]: Finished difference Result 28285 states and 43418 transitions. [2021-02-23 14:16:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 14:16:32,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2021-02-23 14:16:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:16:32,417 INFO L225 Difference]: With dead ends: 28285 [2021-02-23 14:16:32,418 INFO L226 Difference]: Without dead ends: 18879 [2021-02-23 14:16:32,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:16:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18879 states. [2021-02-23 14:16:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18879 to 9484. [2021-02-23 14:16:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9484 states. [2021-02-23 14:16:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9484 states to 9484 states and 14556 transitions. [2021-02-23 14:16:32,945 INFO L78 Accepts]: Start accepts. Automaton has 9484 states and 14556 transitions. Word has length 330 [2021-02-23 14:16:32,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:16:32,946 INFO L480 AbstractCegarLoop]: Abstraction has 9484 states and 14556 transitions. [2021-02-23 14:16:32,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:16:32,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9484 states and 14556 transitions. [2021-02-23 14:16:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-02-23 14:16:33,026 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:16:33,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:16:33,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 14:16:33,027 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:16:33,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:16:33,028 INFO L82 PathProgramCache]: Analyzing trace with hash -287995232, now seen corresponding path program 1 times [2021-02-23 14:16:33,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:16:33,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136721807] [2021-02-23 14:16:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:16:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:16:33,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:33,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:33,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:33,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 14:16:33,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:33,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:34,045 WARN L202 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:16:34,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:16:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:16:34,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:34,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:16:34,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136721807] [2021-02-23 14:16:34,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:16:34,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:16:34,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768516721] [2021-02-23 14:16:34,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:16:34,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:16:34,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:16:34,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:16:34,240 INFO L87 Difference]: Start difference. First operand 9484 states and 14556 transitions. Second operand 4 states. [2021-02-23 14:16:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:16:46,490 INFO L93 Difference]: Finished difference Result 27761 states and 42501 transitions. [2021-02-23 14:16:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 14:16:46,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2021-02-23 14:16:46,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:16:46,527 INFO L225 Difference]: With dead ends: 27761 [2021-02-23 14:16:46,527 INFO L226 Difference]: Without dead ends: 18522 [2021-02-23 14:16:46,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:16:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18522 states. [2021-02-23 14:16:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18522 to 18315. [2021-02-23 14:16:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18315 states. [2021-02-23 14:16:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18315 states to 18315 states and 27960 transitions. [2021-02-23 14:16:47,266 INFO L78 Accepts]: Start accepts. Automaton has 18315 states and 27960 transitions. Word has length 331 [2021-02-23 14:16:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:16:47,266 INFO L480 AbstractCegarLoop]: Abstraction has 18315 states and 27960 transitions. [2021-02-23 14:16:47,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:16:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 18315 states and 27960 transitions. [2021-02-23 14:16:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-02-23 14:16:47,296 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:16:47,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:16:47,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 14:16:47,297 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:16:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:16:47,298 INFO L82 PathProgramCache]: Analyzing trace with hash -192048477, now seen corresponding path program 1 times [2021-02-23 14:16:47,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:16:47,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984462592] [2021-02-23 14:16:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:16:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:16:47,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:47,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:47,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:47,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 14:16:47,698 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 14:16:47,700 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 14:16:47,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:47,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 14:16:47,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:47,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:48,727 WARN L202 SmtUtils]: Spent 957.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:16:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:16:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:16:48,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:16:48,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:16:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:16:48,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984462592] [2021-02-23 14:16:48,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:16:48,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 14:16:48,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455539659] [2021-02-23 14:16:48,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 14:16:48,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:16:48,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 14:16:48,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 14:16:48,956 INFO L87 Difference]: Start difference. First operand 18315 states and 27960 transitions. Second operand 6 states. [2021-02-23 14:17:00,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:17:00,144 INFO L93 Difference]: Finished difference Result 53907 states and 82129 transitions. [2021-02-23 14:17:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:17:00,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 331 [2021-02-23 14:17:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:17:00,201 INFO L225 Difference]: With dead ends: 53907 [2021-02-23 14:17:00,201 INFO L226 Difference]: Without dead ends: 35651 [2021-02-23 14:17:00,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 14:17:00,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35651 states. [2021-02-23 14:17:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35651 to 35460. [2021-02-23 14:17:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35460 states. [2021-02-23 14:17:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35460 states to 35460 states and 53697 transitions. [2021-02-23 14:17:01,936 INFO L78 Accepts]: Start accepts. Automaton has 35460 states and 53697 transitions. Word has length 331 [2021-02-23 14:17:01,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:17:01,936 INFO L480 AbstractCegarLoop]: Abstraction has 35460 states and 53697 transitions. [2021-02-23 14:17:01,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 14:17:01,937 INFO L276 IsEmpty]: Start isEmpty. Operand 35460 states and 53697 transitions. [2021-02-23 14:17:01,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-02-23 14:17:01,980 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:17:01,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:17:01,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 14:17:01,981 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:17:01,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:17:01,982 INFO L82 PathProgramCache]: Analyzing trace with hash 44375133, now seen corresponding path program 1 times [2021-02-23 14:17:01,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:17:01,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936186099] [2021-02-23 14:17:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:17:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:02,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:02,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:02,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:02,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 14:17:02,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:02,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:03,192 WARN L202 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:17:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:17:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:03,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:03,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:17:03,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936186099] [2021-02-23 14:17:03,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:17:03,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:17:03,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980230200] [2021-02-23 14:17:03,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:17:03,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:17:03,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:17:03,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:17:03,355 INFO L87 Difference]: Start difference. First operand 35460 states and 53697 transitions. Second operand 4 states. [2021-02-23 14:17:16,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:17:16,970 INFO L93 Difference]: Finished difference Result 104308 states and 157578 transitions. [2021-02-23 14:17:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 14:17:16,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2021-02-23 14:17:16,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:17:17,072 INFO L225 Difference]: With dead ends: 104308 [2021-02-23 14:17:17,072 INFO L226 Difference]: Without dead ends: 69369 [2021-02-23 14:17:17,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:17:17,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69369 states. [2021-02-23 14:17:20,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69369 to 69194. [2021-02-23 14:17:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69194 states. [2021-02-23 14:17:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69194 states to 69194 states and 103954 transitions. [2021-02-23 14:17:20,338 INFO L78 Accepts]: Start accepts. Automaton has 69194 states and 103954 transitions. Word has length 333 [2021-02-23 14:17:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:17:20,338 INFO L480 AbstractCegarLoop]: Abstraction has 69194 states and 103954 transitions. [2021-02-23 14:17:20,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:17:20,339 INFO L276 IsEmpty]: Start isEmpty. Operand 69194 states and 103954 transitions. [2021-02-23 14:17:20,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-02-23 14:17:20,409 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:17:20,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:17:20,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 14:17:20,410 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:17:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:17:20,411 INFO L82 PathProgramCache]: Analyzing trace with hash 196430112, now seen corresponding path program 1 times [2021-02-23 14:17:20,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:17:20,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013439992] [2021-02-23 14:17:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:17:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:20,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:20,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:20,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:20,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 14:17:20,841 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 14:17:20,842 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 14:17:20,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:20,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 14:17:20,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:20,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:21,947 WARN L202 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:17:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:17:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:21,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:21,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:17:22,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013439992] [2021-02-23 14:17:22,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:17:22,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 14:17:22,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927536513] [2021-02-23 14:17:22,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 14:17:22,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:17:22,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 14:17:22,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 14:17:22,177 INFO L87 Difference]: Start difference. First operand 69194 states and 103954 transitions. Second operand 6 states. [2021-02-23 14:17:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:17:38,246 INFO L93 Difference]: Finished difference Result 204219 states and 306172 transitions. [2021-02-23 14:17:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:17:38,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 333 [2021-02-23 14:17:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:17:38,444 INFO L225 Difference]: With dead ends: 204219 [2021-02-23 14:17:38,444 INFO L226 Difference]: Without dead ends: 135180 [2021-02-23 14:17:38,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 14:17:38,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135180 states. [2021-02-23 14:17:44,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135180 to 135069. [2021-02-23 14:17:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135069 states. [2021-02-23 14:17:44,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135069 states to 135069 states and 201214 transitions. [2021-02-23 14:17:44,748 INFO L78 Accepts]: Start accepts. Automaton has 135069 states and 201214 transitions. Word has length 333 [2021-02-23 14:17:44,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:17:44,749 INFO L480 AbstractCegarLoop]: Abstraction has 135069 states and 201214 transitions. [2021-02-23 14:17:44,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 14:17:44,749 INFO L276 IsEmpty]: Start isEmpty. Operand 135069 states and 201214 transitions. [2021-02-23 14:17:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-02-23 14:17:45,083 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:17:45,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:17:45,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 14:17:45,085 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:17:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:17:45,086 INFO L82 PathProgramCache]: Analyzing trace with hash -19893751, now seen corresponding path program 1 times [2021-02-23 14:17:45,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:17:45,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109172814] [2021-02-23 14:17:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:17:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:45,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:45,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:45,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:45,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 14:17:45,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:45,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 14:17:45,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:45,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:46,582 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:17:46,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:17:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:17:46,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:17:46,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:17:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:17:46,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109172814] [2021-02-23 14:17:46,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:17:46,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 14:17:46,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337660952] [2021-02-23 14:17:46,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 14:17:46,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:17:46,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 14:17:46,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 14:17:46,821 INFO L87 Difference]: Start difference. First operand 135069 states and 201214 transitions. Second operand 5 states. [2021-02-23 14:18:08,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:18:08,295 INFO L93 Difference]: Finished difference Result 399538 states and 594215 transitions. [2021-02-23 14:18:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 14:18:08,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2021-02-23 14:18:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:18:08,718 INFO L225 Difference]: With dead ends: 399538 [2021-02-23 14:18:08,718 INFO L226 Difference]: Without dead ends: 264755 [2021-02-23 14:18:08,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 14:18:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264755 states. [2021-02-23 14:18:21,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264755 to 264356. [2021-02-23 14:18:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264356 states. [2021-02-23 14:18:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264356 states to 264356 states and 391022 transitions. [2021-02-23 14:18:22,017 INFO L78 Accepts]: Start accepts. Automaton has 264356 states and 391022 transitions. Word has length 333 [2021-02-23 14:18:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:18:22,017 INFO L480 AbstractCegarLoop]: Abstraction has 264356 states and 391022 transitions. [2021-02-23 14:18:22,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 14:18:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 264356 states and 391022 transitions. [2021-02-23 14:18:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-02-23 14:18:22,207 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:18:22,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:18:22,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 14:18:22,208 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:18:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:18:22,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1360359783, now seen corresponding path program 1 times [2021-02-23 14:18:22,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:18:22,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583619367] [2021-02-23 14:18:22,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:18:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:18:22,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:22,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:18:22,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:22,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 14:18:22,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:22,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:18:23,419 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:18:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:18:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:18:23,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:18:23,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:18:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:18:23,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583619367] [2021-02-23 14:18:23,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:18:23,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:18:23,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252003492] [2021-02-23 14:18:23,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:18:23,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:18:23,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:18:23,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:18:23,544 INFO L87 Difference]: Start difference. First operand 264356 states and 391022 transitions. Second operand 4 states. [2021-02-23 14:18:58,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:18:58,439 INFO L93 Difference]: Finished difference Result 790368 states and 1168546 transitions. [2021-02-23 14:18:58,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 14:18:58,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2021-02-23 14:18:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:18:59,404 INFO L225 Difference]: With dead ends: 790368 [2021-02-23 14:18:59,404 INFO L226 Difference]: Without dead ends: 526599 [2021-02-23 14:18:59,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:18:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526599 states. [2021-02-23 14:19:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526599 to 264514. [2021-02-23 14:19:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264514 states. [2021-02-23 14:19:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264514 states to 264514 states and 391232 transitions. [2021-02-23 14:19:15,513 INFO L78 Accepts]: Start accepts. Automaton has 264514 states and 391232 transitions. Word has length 335 [2021-02-23 14:19:15,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:19:15,513 INFO L480 AbstractCegarLoop]: Abstraction has 264514 states and 391232 transitions. [2021-02-23 14:19:15,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 14:19:15,513 INFO L276 IsEmpty]: Start isEmpty. Operand 264514 states and 391232 transitions. [2021-02-23 14:19:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-02-23 14:19:16,267 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:19:16,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:19:16,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 14:19:16,267 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:19:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:19:16,268 INFO L82 PathProgramCache]: Analyzing trace with hash -303724852, now seen corresponding path program 1 times [2021-02-23 14:19:16,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:19:16,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941758018] [2021-02-23 14:19:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:19:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:19:16,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:19:16,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:19:16,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:19:16,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 14:19:16,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:19:16,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:19:17,364 WARN L202 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-23 14:19:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:19:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:19:17,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:19:17,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:19:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:19:17,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941758018] [2021-02-23 14:19:17,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:19:17,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 14:19:17,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216425210] [2021-02-23 14:19:17,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 14:19:17,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:19:17,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 14:19:17,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 14:19:17,650 INFO L87 Difference]: Start difference. First operand 264514 states and 391232 transitions. Second operand 4 states.