/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-b7b32d2 [2021-02-21 16:48:46,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:48:46,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:48:46,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:48:46,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:48:46,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:48:46,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:48:46,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:48:46,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:48:46,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:48:46,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:48:46,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:48:46,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:48:46,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:48:46,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:48:46,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:48:46,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:48:46,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:48:46,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:48:46,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:48:46,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:48:46,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:48:46,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:48:46,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:48:46,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:48:46,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:48:46,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:48:46,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:48:46,534 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 [2021-02-21 16:48:46,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:48:46,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:48:46,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:48:46,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:48:46,561 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:48:46,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:48:46,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:48:46,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:48:46,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:48:46,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:48:46,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:48:46,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:48:46,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:48:46,563 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:48:46,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:48:46,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:48:46,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:48:46,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:48:46,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:48:46,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:48:46,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:48:46,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:48:46,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:48:46,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:48:46,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:48:46,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:48:46,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:48:46,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:48:46,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:48:46,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:48:46,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:48:46,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:48:46,980 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:48:46,981 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:48:46,982 INFO L432 ainManager$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 [2021-02-21 16:48:47,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f2d0ac64/27bbb6dcb4574634b732eb6404146cea/FLAG08e143ffd [2021-02-21 16:48:47,877 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:48:47,878 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 [2021-02-21 16:48:47,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f2d0ac64/27bbb6dcb4574634b732eb6404146cea/FLAG08e143ffd [2021-02-21 16:48:48,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f2d0ac64/27bbb6dcb4574634b732eb6404146cea [2021-02-21 16:48:48,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:48:48,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:48:48,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:48:48,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:48:48,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:48:48,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:48:48" (1/1) ... [2021-02-21 16:48:48,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46698895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:48, skipping insertion in model container [2021-02-21 16:48:48,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:48:48" (1/1) ... [2021-02-21 16:48:48,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:48:48,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:48:49,127 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] [2021-02-21 16:48:49,160 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] [2021-02-21 16:48:49,212 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] [2021-02-21 16:48:49,235 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] [2021-02-21 16:48:49,281 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] [2021-02-21 16:48:49,301 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] [2021-02-21 16:48:49,335 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] [2021-02-21 16:48:49,362 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] [2021-02-21 16:48:49,535 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] [2021-02-21 16:48:49,554 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] [2021-02-21 16:48:49,587 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] [2021-02-21 16:48:49,648 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] [2021-02-21 16:48:49,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:48:49,809 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:48:50,347 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] [2021-02-21 16:48:50,364 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] [2021-02-21 16:48:50,390 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] [2021-02-21 16:48:50,407 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] [2021-02-21 16:48:50,445 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] [2021-02-21 16:48:50,462 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] [2021-02-21 16:48:50,491 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] [2021-02-21 16:48:50,515 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] [2021-02-21 16:48:50,661 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] [2021-02-21 16:48:50,679 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] [2021-02-21 16:48:50,707 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] [2021-02-21 16:48:50,764 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] [2021-02-21 16:48:50,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:48:50,907 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:48:50,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:50 WrapperNode [2021-02-21 16:48:50,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:48:50,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:48:50,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:48:50,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:48:50,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:50" (1/1) ... [2021-02-21 16:48:50,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:50" (1/1) ... [2021-02-21 16:48:50,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:50" (1/1) ... [2021-02-21 16:48:50,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:50" (1/1) ... [2021-02-21 16:48:51,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:50" (1/1) ... [2021-02-21 16:48:51,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:50" (1/1) ... [2021-02-21 16:48:51,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:50" (1/1) ... [2021-02-21 16:48:51,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:48:51,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:48:51,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:48:51,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:48:51,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:50" (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 [2021-02-21 16:48:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:48:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:48:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:48:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:48:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:48:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:48:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:48:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:48:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:48:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-21 16:48:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2021-02-21 16:48:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-21 16:48:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-21 16:48:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:48:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-21 16:48:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-21 16:48:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-21 16:48:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-21 16:48:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-21 16:48:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2021-02-21 16:48:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-21 16:48:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-21 16:48:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:48:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:48:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:48:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:48:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:48:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:48:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:48:54,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:48:54,600 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 16:48:54,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:48:54 BoogieIcfgContainer [2021-02-21 16:48:54,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:48:54,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:48:54,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:48:54,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:48:54,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:48:48" (1/3) ... [2021-02-21 16:48:54,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241a3410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:48:54, skipping insertion in model container [2021-02-21 16:48:54,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:48:50" (2/3) ... [2021-02-21 16:48:54,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241a3410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:48:54, skipping insertion in model container [2021-02-21 16:48:54,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:48:54" (3/3) ... [2021-02-21 16:48:54,613 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-21 16:48:54,619 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:48:54,628 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2021-02-21 16:48:54,647 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-02-21 16:48:54,682 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:48:54,682 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:48:54,682 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:48:54,682 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:48:54,682 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:48:54,683 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:48:54,683 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:48:54,683 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:48:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2021-02-21 16:48:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-02-21 16:48:54,750 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:48:54,751 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] [2021-02-21 16:48:54,752 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]=== [2021-02-21 16:48:54,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:48:54,758 INFO L82 PathProgramCache]: Analyzing trace with hash -766055028, now seen corresponding path program 1 times [2021-02-21 16:48:54,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:48:54,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178665019] [2021-02-21 16:48:54,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:48:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:48:55,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:55,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:48:55,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:55,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:48:55,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:55,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:48:56,570 WARN L202 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:48:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:48:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:48:56,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:56,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:48:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:48:56,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178665019] [2021-02-21 16:48:56,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:48:56,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:48:56,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273227194] [2021-02-21 16:48:56,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:48:56,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:48:56,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:48:56,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:48:56,869 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 4 states. [2021-02-21 16:48:57,681 WARN L202 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2021-02-21 16:49:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:49:05,201 INFO L93 Difference]: Finished difference Result 1807 states and 3208 transitions. [2021-02-21 16:49:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:49:05,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2021-02-21 16:49:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:49:05,247 INFO L225 Difference]: With dead ends: 1807 [2021-02-21 16:49:05,248 INFO L226 Difference]: Without dead ends: 1529 [2021-02-21 16:49:05,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:49:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-02-21 16:49:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2021-02-21 16:49:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2021-02-21 16:49:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2336 transitions. [2021-02-21 16:49:05,434 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2336 transitions. Word has length 327 [2021-02-21 16:49:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:49:05,442 INFO L480 AbstractCegarLoop]: Abstraction has 1527 states and 2336 transitions. [2021-02-21 16:49:05,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:49:05,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2336 transitions. [2021-02-21 16:49:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-02-21 16:49:05,457 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:49:05,458 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] [2021-02-21 16:49:05,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:49:05,460 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]=== [2021-02-21 16:49:05,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:49:05,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1649642111, now seen corresponding path program 1 times [2021-02-21 16:49:05,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:49:05,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751898881] [2021-02-21 16:49:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:49:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:05,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:05,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:05,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:05,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:49:05,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:05,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:06,815 WARN L202 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:49:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:49:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:06,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:06,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:49:07,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751898881] [2021-02-21 16:49:07,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:49:07,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:49:07,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746940389] [2021-02-21 16:49:07,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:49:07,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:49:07,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:49:07,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:49:07,023 INFO L87 Difference]: Start difference. First operand 1527 states and 2336 transitions. Second operand 4 states. [2021-02-21 16:49:07,869 WARN L202 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2021-02-21 16:49:14,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:49:14,602 INFO L93 Difference]: Finished difference Result 2982 states and 4621 transitions. [2021-02-21 16:49:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:49:14,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2021-02-21 16:49:14,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:49:14,619 INFO L225 Difference]: With dead ends: 2982 [2021-02-21 16:49:14,619 INFO L226 Difference]: Without dead ends: 2611 [2021-02-21 16:49:14,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:49:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-02-21 16:49:14,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2609. [2021-02-21 16:49:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2609 states. [2021-02-21 16:49:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 4019 transitions. [2021-02-21 16:49:14,712 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 4019 transitions. Word has length 327 [2021-02-21 16:49:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:49:14,713 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 4019 transitions. [2021-02-21 16:49:14,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:49:14,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 4019 transitions. [2021-02-21 16:49:14,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-02-21 16:49:14,725 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:49:14,726 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] [2021-02-21 16:49:14,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:49:14,726 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]=== [2021-02-21 16:49:14,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:49:14,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1649980735, now seen corresponding path program 1 times [2021-02-21 16:49:14,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:49:14,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114947895] [2021-02-21 16:49:14,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:49:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:15,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:15,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:15,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:15,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:49:15,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:15,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:49:15,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:15,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:16,085 WARN L202 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:49:16,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:49:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:16,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:16,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:49:16,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114947895] [2021-02-21 16:49:16,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:49:16,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:49:16,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885338918] [2021-02-21 16:49:16,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:49:16,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:49:16,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:49:16,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:49:16,331 INFO L87 Difference]: Start difference. First operand 2609 states and 4019 transitions. Second operand 5 states. [2021-02-21 16:49:25,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:49:25,815 INFO L93 Difference]: Finished difference Result 7717 states and 11876 transitions. [2021-02-21 16:49:25,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:49:25,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2021-02-21 16:49:25,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:49:25,843 INFO L225 Difference]: With dead ends: 7717 [2021-02-21 16:49:25,844 INFO L226 Difference]: Without dead ends: 5123 [2021-02-21 16:49:25,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:49:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2021-02-21 16:49:26,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 4916. [2021-02-21 16:49:26,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4916 states. [2021-02-21 16:49:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 7571 transitions. [2021-02-21 16:49:26,033 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 7571 transitions. Word has length 327 [2021-02-21 16:49:26,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:49:26,034 INFO L480 AbstractCegarLoop]: Abstraction has 4916 states and 7571 transitions. [2021-02-21 16:49:26,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:49:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 7571 transitions. [2021-02-21 16:49:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-02-21 16:49:26,046 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:49:26,046 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] [2021-02-21 16:49:26,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:49:26,047 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]=== [2021-02-21 16:49:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:49:26,048 INFO L82 PathProgramCache]: Analyzing trace with hash 802027803, now seen corresponding path program 1 times [2021-02-21 16:49:26,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:49:26,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407803807] [2021-02-21 16:49:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:49:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:26,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:26,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:26,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:26,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:49:26,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:26,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:27,017 WARN L202 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:49:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:49:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:27,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:27,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:49:27,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407803807] [2021-02-21 16:49:27,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:49:27,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:49:27,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296477930] [2021-02-21 16:49:27,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:49:27,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:49:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:49:27,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:49:27,182 INFO L87 Difference]: Start difference. First operand 4916 states and 7571 transitions. Second operand 4 states. [2021-02-21 16:49:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:49:37,935 INFO L93 Difference]: Finished difference Result 14441 states and 22189 transitions. [2021-02-21 16:49:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:49:37,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2021-02-21 16:49:37,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:49:37,983 INFO L225 Difference]: With dead ends: 14441 [2021-02-21 16:49:37,983 INFO L226 Difference]: Without dead ends: 9654 [2021-02-21 16:49:37,994 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 [2021-02-21 16:49:38,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9654 states. [2021-02-21 16:49:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9654 to 9447. [2021-02-21 16:49:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9447 states. [2021-02-21 16:49:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9447 states to 9447 states and 14507 transitions. [2021-02-21 16:49:38,380 INFO L78 Accepts]: Start accepts. Automaton has 9447 states and 14507 transitions. Word has length 329 [2021-02-21 16:49:38,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:49:38,381 INFO L480 AbstractCegarLoop]: Abstraction has 9447 states and 14507 transitions. [2021-02-21 16:49:38,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:49:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 9447 states and 14507 transitions. [2021-02-21 16:49:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-02-21 16:49:38,403 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:49:38,404 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] [2021-02-21 16:49:38,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 16:49:38,404 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]=== [2021-02-21 16:49:38,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:49:38,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1387510922, now seen corresponding path program 1 times [2021-02-21 16:49:38,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:49:38,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299511622] [2021-02-21 16:49:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:49:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:38,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:38,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:38,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:38,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:49:38,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:38,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:39,386 WARN L202 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:49:39,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:49:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:39,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:39,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:49:39,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299511622] [2021-02-21 16:49:39,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:49:39,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:49:39,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619609946] [2021-02-21 16:49:39,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:49:39,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:49:39,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:49:39,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:49:39,502 INFO L87 Difference]: Start difference. First operand 9447 states and 14507 transitions. Second operand 4 states. [2021-02-21 16:49:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:49:50,649 INFO L93 Difference]: Finished difference Result 28266 states and 43397 transitions. [2021-02-21 16:49:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:49:50,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2021-02-21 16:49:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:49:50,719 INFO L225 Difference]: With dead ends: 28266 [2021-02-21 16:49:50,719 INFO L226 Difference]: Without dead ends: 18861 [2021-02-21 16:49:50,739 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 [2021-02-21 16:49:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18861 states. [2021-02-21 16:49:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18861 to 9466. [2021-02-21 16:49:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9466 states. [2021-02-21 16:49:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9466 states to 9466 states and 14535 transitions. [2021-02-21 16:49:51,266 INFO L78 Accepts]: Start accepts. Automaton has 9466 states and 14535 transitions. Word has length 329 [2021-02-21 16:49:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:49:51,267 INFO L480 AbstractCegarLoop]: Abstraction has 9466 states and 14535 transitions. [2021-02-21 16:49:51,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:49:51,267 INFO L276 IsEmpty]: Start isEmpty. Operand 9466 states and 14535 transitions. [2021-02-21 16:49:51,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-02-21 16:49:51,287 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:49:51,288 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] [2021-02-21 16:49:51,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 16:49:51,288 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]=== [2021-02-21 16:49:51,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:49:51,289 INFO L82 PathProgramCache]: Analyzing trace with hash 545918961, now seen corresponding path program 1 times [2021-02-21 16:49:51,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:49:51,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925882272] [2021-02-21 16:49:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:49:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:51,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:51,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:51,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:51,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:49:51,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:51,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:52,251 WARN L202 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:49:52,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:49:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:52,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:52,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:49:52,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925882272] [2021-02-21 16:49:52,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:49:52,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:49:52,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695187399] [2021-02-21 16:49:52,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:49:52,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:49:52,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:49:52,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:49:52,378 INFO L87 Difference]: Start difference. First operand 9466 states and 14535 transitions. Second operand 4 states. [2021-02-21 16:50:03,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:50:03,699 INFO L93 Difference]: Finished difference Result 28285 states and 43418 transitions. [2021-02-21 16:50:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:50:03,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2021-02-21 16:50:03,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:50:03,738 INFO L225 Difference]: With dead ends: 28285 [2021-02-21 16:50:03,738 INFO L226 Difference]: Without dead ends: 18879 [2021-02-21 16:50:03,756 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 [2021-02-21 16:50:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18879 states. [2021-02-21 16:50:04,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18879 to 9484. [2021-02-21 16:50:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9484 states. [2021-02-21 16:50:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9484 states to 9484 states and 14556 transitions. [2021-02-21 16:50:04,286 INFO L78 Accepts]: Start accepts. Automaton has 9484 states and 14556 transitions. Word has length 330 [2021-02-21 16:50:04,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:50:04,287 INFO L480 AbstractCegarLoop]: Abstraction has 9484 states and 14556 transitions. [2021-02-21 16:50:04,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:50:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 9484 states and 14556 transitions. [2021-02-21 16:50:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-02-21 16:50:04,310 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:50:04,311 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] [2021-02-21 16:50:04,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 16:50:04,311 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]=== [2021-02-21 16:50:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:50:04,312 INFO L82 PathProgramCache]: Analyzing trace with hash -287995232, now seen corresponding path program 1 times [2021-02-21 16:50:04,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:50:04,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864140751] [2021-02-21 16:50:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:50:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:50:04,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:04,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:04,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:04,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:50:04,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:04,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:05,312 WARN L202 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:50:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:50:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:50:05,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:05,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:50:05,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864140751] [2021-02-21 16:50:05,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:50:05,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:50:05,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424420056] [2021-02-21 16:50:05,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:50:05,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:50:05,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:50:05,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:50:05,571 INFO L87 Difference]: Start difference. First operand 9484 states and 14556 transitions. Second operand 4 states. [2021-02-21 16:50:17,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:50:17,140 INFO L93 Difference]: Finished difference Result 27761 states and 42501 transitions. [2021-02-21 16:50:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:50:17,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2021-02-21 16:50:17,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:50:17,178 INFO L225 Difference]: With dead ends: 27761 [2021-02-21 16:50:17,178 INFO L226 Difference]: Without dead ends: 18522 [2021-02-21 16:50:17,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:50:17,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18522 states. [2021-02-21 16:50:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18522 to 18315. [2021-02-21 16:50:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18315 states. [2021-02-21 16:50:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18315 states to 18315 states and 27960 transitions. [2021-02-21 16:50:17,966 INFO L78 Accepts]: Start accepts. Automaton has 18315 states and 27960 transitions. Word has length 331 [2021-02-21 16:50:17,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:50:17,966 INFO L480 AbstractCegarLoop]: Abstraction has 18315 states and 27960 transitions. [2021-02-21 16:50:17,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:50:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 18315 states and 27960 transitions. [2021-02-21 16:50:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-02-21 16:50:18,000 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:50:18,000 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] [2021-02-21 16:50:18,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 16:50:18,001 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]=== [2021-02-21 16:50:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:50:18,002 INFO L82 PathProgramCache]: Analyzing trace with hash -192048477, now seen corresponding path program 1 times [2021-02-21 16:50:18,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:50:18,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422326214] [2021-02-21 16:50:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:50:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:50:18,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:18,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:18,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:18,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:50:18,365 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-21 16:50:18,366 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-21 16:50:18,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:18,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:50:18,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:18,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:19,172 WARN L202 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:50:19,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:50:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:50:19,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:19,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:50:19,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422326214] [2021-02-21 16:50:19,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:50:19,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:50:19,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041276257] [2021-02-21 16:50:19,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:50:19,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:50:19,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:50:19,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:50:19,355 INFO L87 Difference]: Start difference. First operand 18315 states and 27960 transitions. Second operand 6 states. [2021-02-21 16:50:29,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:50:29,765 INFO L93 Difference]: Finished difference Result 53907 states and 82129 transitions. [2021-02-21 16:50:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:50:29,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 331 [2021-02-21 16:50:29,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:50:29,829 INFO L225 Difference]: With dead ends: 53907 [2021-02-21 16:50:29,830 INFO L226 Difference]: Without dead ends: 35651 [2021-02-21 16:50:29,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:50:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35651 states. [2021-02-21 16:50:31,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35651 to 35460. [2021-02-21 16:50:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35460 states. [2021-02-21 16:50:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35460 states to 35460 states and 53697 transitions. [2021-02-21 16:50:31,699 INFO L78 Accepts]: Start accepts. Automaton has 35460 states and 53697 transitions. Word has length 331 [2021-02-21 16:50:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:50:31,699 INFO L480 AbstractCegarLoop]: Abstraction has 35460 states and 53697 transitions. [2021-02-21 16:50:31,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:50:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 35460 states and 53697 transitions. [2021-02-21 16:50:31,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-02-21 16:50:31,758 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:50:31,759 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] [2021-02-21 16:50:31,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 16:50:31,759 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]=== [2021-02-21 16:50:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:50:31,760 INFO L82 PathProgramCache]: Analyzing trace with hash 44375133, now seen corresponding path program 1 times [2021-02-21 16:50:31,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:50:31,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384282995] [2021-02-21 16:50:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:50:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:50:31,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:31,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:31,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:31,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:50:31,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:31,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:32,787 WARN L202 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:50:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:50:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:50:32,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:32,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:50:32,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384282995] [2021-02-21 16:50:32,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:50:32,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:50:32,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481473822] [2021-02-21 16:50:32,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:50:32,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:50:32,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:50:32,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:50:32,950 INFO L87 Difference]: Start difference. First operand 35460 states and 53697 transitions. Second operand 4 states. [2021-02-21 16:50:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:50:45,506 INFO L93 Difference]: Finished difference Result 104308 states and 157578 transitions. [2021-02-21 16:50:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:50:45,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2021-02-21 16:50:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:50:45,617 INFO L225 Difference]: With dead ends: 104308 [2021-02-21 16:50:45,618 INFO L226 Difference]: Without dead ends: 69369 [2021-02-21 16:50:45,665 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 [2021-02-21 16:50:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69369 states. [2021-02-21 16:50:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69369 to 69194. [2021-02-21 16:50:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69194 states. [2021-02-21 16:50:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69194 states to 69194 states and 103954 transitions. [2021-02-21 16:50:48,700 INFO L78 Accepts]: Start accepts. Automaton has 69194 states and 103954 transitions. Word has length 333 [2021-02-21 16:50:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:50:48,702 INFO L480 AbstractCegarLoop]: Abstraction has 69194 states and 103954 transitions. [2021-02-21 16:50:48,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:50:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 69194 states and 103954 transitions. [2021-02-21 16:50:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-02-21 16:50:48,771 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:50:48,771 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] [2021-02-21 16:50:48,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 16:50:48,772 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]=== [2021-02-21 16:50:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:50:48,774 INFO L82 PathProgramCache]: Analyzing trace with hash 196430112, now seen corresponding path program 1 times [2021-02-21 16:50:48,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:50:48,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732206560] [2021-02-21 16:50:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:50:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:50:49,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:49,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:49,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:49,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:50:49,235 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-21 16:50:49,236 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-21 16:50:49,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:49,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:50:49,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:49,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:50,390 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:50:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:50:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:50:50,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:50:50,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:50:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:50:50,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732206560] [2021-02-21 16:50:50,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:50:50,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:50:50,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054447511] [2021-02-21 16:50:50,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:50:50,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:50:50,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:50:50,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:50:50,600 INFO L87 Difference]: Start difference. First operand 69194 states and 103954 transitions. Second operand 6 states. [2021-02-21 16:51:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:51:05,315 INFO L93 Difference]: Finished difference Result 204219 states and 306172 transitions. [2021-02-21 16:51:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:51:05,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 333 [2021-02-21 16:51:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:51:05,483 INFO L225 Difference]: With dead ends: 204219 [2021-02-21 16:51:05,484 INFO L226 Difference]: Without dead ends: 135180 [2021-02-21 16:51:05,673 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 [2021-02-21 16:51:05,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135180 states. [2021-02-21 16:51:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135180 to 135069. [2021-02-21 16:51:11,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135069 states. [2021-02-21 16:51:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135069 states to 135069 states and 201214 transitions. [2021-02-21 16:51:11,951 INFO L78 Accepts]: Start accepts. Automaton has 135069 states and 201214 transitions. Word has length 333 [2021-02-21 16:51:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:51:11,952 INFO L480 AbstractCegarLoop]: Abstraction has 135069 states and 201214 transitions. [2021-02-21 16:51:11,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:51:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 135069 states and 201214 transitions. [2021-02-21 16:51:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-02-21 16:51:12,089 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:51:12,089 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] [2021-02-21 16:51:12,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 16:51:12,090 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]=== [2021-02-21 16:51:12,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:51:12,091 INFO L82 PathProgramCache]: Analyzing trace with hash -19893751, now seen corresponding path program 1 times [2021-02-21 16:51:12,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:51:12,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323904106] [2021-02-21 16:51:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:51:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:51:12,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:51:12,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:51:12,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:51:12,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:51:12,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:51:12,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:51:12,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:51:12,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:51:13,701 WARN L202 SmtUtils]: Spent 936.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:51:13,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:51:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:51:13,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:51:13,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:51:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:51:13,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323904106] [2021-02-21 16:51:13,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:51:13,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:51:13,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343383822] [2021-02-21 16:51:13,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:51:13,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:51:13,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:51:13,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:51:13,911 INFO L87 Difference]: Start difference. First operand 135069 states and 201214 transitions. Second operand 5 states. [2021-02-21 16:51:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:51:34,312 INFO L93 Difference]: Finished difference Result 399538 states and 594215 transitions. [2021-02-21 16:51:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:51:34,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2021-02-21 16:51:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:51:34,703 INFO L225 Difference]: With dead ends: 399538 [2021-02-21 16:51:34,704 INFO L226 Difference]: Without dead ends: 264755 [2021-02-21 16:51:34,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:51:35,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264755 states. [2021-02-21 16:51:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264755 to 264356. [2021-02-21 16:51:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264356 states. [2021-02-21 16:51:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264356 states to 264356 states and 391022 transitions. [2021-02-21 16:51:47,930 INFO L78 Accepts]: Start accepts. Automaton has 264356 states and 391022 transitions. Word has length 333 [2021-02-21 16:51:47,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:51:47,931 INFO L480 AbstractCegarLoop]: Abstraction has 264356 states and 391022 transitions. [2021-02-21 16:51:47,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:51:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 264356 states and 391022 transitions. [2021-02-21 16:51:48,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-02-21 16:51:48,126 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:51:48,127 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] [2021-02-21 16:51:48,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 16:51:48,127 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]=== [2021-02-21 16:51:48,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:51:48,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1360359783, now seen corresponding path program 1 times [2021-02-21 16:51:48,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:51:48,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346756640] [2021-02-21 16:51:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:51:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:51:48,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:51:48,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:51:48,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:51:48,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:51:48,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:51:48,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:51:49,451 WARN L202 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:51:49,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:51:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:51:49,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:51:49,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:51:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:51:49,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346756640] [2021-02-21 16:51:49,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:51:49,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:51:49,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992093679] [2021-02-21 16:51:49,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:51:49,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:51:49,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:51:49,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:51:49,641 INFO L87 Difference]: Start difference. First operand 264356 states and 391022 transitions. Second operand 4 states. [2021-02-21 16:52:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:52:22,940 INFO L93 Difference]: Finished difference Result 790368 states and 1168546 transitions. [2021-02-21 16:52:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:52:22,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2021-02-21 16:52:22,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:52:23,952 INFO L225 Difference]: With dead ends: 790368 [2021-02-21 16:52:23,952 INFO L226 Difference]: Without dead ends: 526599 [2021-02-21 16:52:24,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:52:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526599 states. [2021-02-21 16:52:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526599 to 264514. [2021-02-21 16:52:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264514 states. [2021-02-21 16:52:40,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264514 states to 264514 states and 391232 transitions. [2021-02-21 16:52:40,038 INFO L78 Accepts]: Start accepts. Automaton has 264514 states and 391232 transitions. Word has length 335 [2021-02-21 16:52:40,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:52:40,038 INFO L480 AbstractCegarLoop]: Abstraction has 264514 states and 391232 transitions. [2021-02-21 16:52:40,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:52:40,038 INFO L276 IsEmpty]: Start isEmpty. Operand 264514 states and 391232 transitions. [2021-02-21 16:52:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-02-21 16:52:40,223 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:52:40,224 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] [2021-02-21 16:52:40,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 16:52:40,224 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]=== [2021-02-21 16:52:40,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:52:40,225 INFO L82 PathProgramCache]: Analyzing trace with hash -303724852, now seen corresponding path program 1 times [2021-02-21 16:52:40,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:52:40,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478900073] [2021-02-21 16:52:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:52:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:52:40,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:52:40,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:52:40,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:52:40,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:52:40,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:52:40,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:52:41,744 WARN L202 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:52:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:52:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:52:41,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:52:41,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:52:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:52:42,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478900073] [2021-02-21 16:52:42,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:52:42,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:52:42,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428454502] [2021-02-21 16:52:42,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:52:42,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:52:42,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:52:42,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:52:42,022 INFO L87 Difference]: Start difference. First operand 264514 states and 391232 transitions. Second operand 4 states. [2021-02-21 16:53:18,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:53:18,377 INFO L93 Difference]: Finished difference Result 780533 states and 1152006 transitions. [2021-02-21 16:53:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:53:18,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2021-02-21 16:53:18,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:53:19,382 INFO L225 Difference]: With dead ends: 780533 [2021-02-21 16:53:19,383 INFO L226 Difference]: Without dead ends: 518694 [2021-02-21 16:53:19,590 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 [2021-02-21 16:53:19,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518694 states.