/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 [2021-02-19 18:21:49,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 18:21:49,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 18:21:49,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 18:21:49,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 18:21:49,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 18:21:49,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 18:21:49,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 18:21:49,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 18:21:49,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 18:21:49,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 18:21:49,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 18:21:49,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 18:21:49,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 18:21:49,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 18:21:49,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 18:21:49,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 18:21:49,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 18:21:49,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 18:21:49,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 18:21:49,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 18:21:49,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 18:21:49,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 18:21:49,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 18:21:49,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 18:21:49,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 18:21:49,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 18:21:49,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 18:21:49,350 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 [2021-02-19 18:21:49,380 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 18:21:49,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 18:21:49,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 18:21:49,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 18:21:49,382 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 18:21:49,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 18:21:49,383 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 18:21:49,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 18:21:49,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 18:21:49,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 18:21:49,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 18:21:49,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 18:21:49,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 18:21:49,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 18:21:49,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 18:21:49,385 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 18:21:49,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 18:21:49,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 18:21:49,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 18:21:49,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 18:21:49,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 18:21:49,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 18:21:49,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 18:21:49,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 18:21:49,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 18:21:49,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 18:21:49,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 18:21:49,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 18:21:49,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 18:21:49,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 18:21:49,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 18:21:49,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 18:21:49,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 18:21:49,782 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 18:21:49,784 INFO L432 ainManager$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 [2021-02-19 18:21:49,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405dcccec/da06148236514396b24c35e5fd76b842/FLAG7ac1b4a94 [2021-02-19 18:21:50,709 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 18:21:50,710 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 [2021-02-19 18:21:50,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405dcccec/da06148236514396b24c35e5fd76b842/FLAG7ac1b4a94 [2021-02-19 18:21:50,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405dcccec/da06148236514396b24c35e5fd76b842 [2021-02-19 18:21:50,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 18:21:50,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 18:21:50,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 18:21:50,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 18:21:50,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 18:21:50,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 06:21:50" (1/1) ... [2021-02-19 18:21:50,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479ffd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:50, skipping insertion in model container [2021-02-19 18:21:50,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 06:21:50" (1/1) ... [2021-02-19 18:21:50,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 18:21:51,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 18:21:51,755 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] [2021-02-19 18:21:51,779 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] [2021-02-19 18:21:51,811 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] [2021-02-19 18:21:51,833 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] [2021-02-19 18:21:51,883 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] [2021-02-19 18:21:51,908 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] [2021-02-19 18:21:51,945 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] [2021-02-19 18:21:51,977 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] [2021-02-19 18:21:52,186 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] [2021-02-19 18:21:52,207 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] [2021-02-19 18:21:52,243 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] [2021-02-19 18:21:52,322 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] [2021-02-19 18:21:52,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 18:21:52,504 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 18:21:52,796 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] [2021-02-19 18:21:52,815 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] [2021-02-19 18:21:52,846 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] [2021-02-19 18:21:52,864 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] [2021-02-19 18:21:52,904 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] [2021-02-19 18:21:52,924 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] [2021-02-19 18:21:52,954 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] [2021-02-19 18:21:52,980 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] [2021-02-19 18:21:53,140 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] [2021-02-19 18:21:53,158 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] [2021-02-19 18:21:53,188 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] [2021-02-19 18:21:53,252 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] [2021-02-19 18:21:53,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 18:21:53,424 INFO L208 MainTranslator]: Completed translation [2021-02-19 18:21:53,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:53 WrapperNode [2021-02-19 18:21:53,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 18:21:53,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 18:21:53,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 18:21:53,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 18:21:53,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:53" (1/1) ... [2021-02-19 18:21:53,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:53" (1/1) ... [2021-02-19 18:21:53,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:53" (1/1) ... [2021-02-19 18:21:53,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:53" (1/1) ... [2021-02-19 18:21:53,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:53" (1/1) ... [2021-02-19 18:21:53,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:53" (1/1) ... [2021-02-19 18:21:53,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:53" (1/1) ... [2021-02-19 18:21:53,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 18:21:53,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 18:21:53,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 18:21:53,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 18:21:53,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:53" (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 [2021-02-19 18:21:53,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 18:21:53,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 18:21:53,805 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 18:21:53,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 18:21:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 18:21:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 18:21:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 18:21:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 18:21:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 18:21:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-19 18:21:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2021-02-19 18:21:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-19 18:21:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-19 18:21:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 18:21:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-19 18:21:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-19 18:21:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-19 18:21:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-19 18:21:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-19 18:21:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2021-02-19 18:21:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-19 18:21:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-19 18:21:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 18:21:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 18:21:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 18:21:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 18:21:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 18:21:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 18:21:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 18:21:57,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 18:21:57,395 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 18:21:57,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 06:21:57 BoogieIcfgContainer [2021-02-19 18:21:57,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 18:21:57,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 18:21:57,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 18:21:57,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 18:21:57,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 06:21:50" (1/3) ... [2021-02-19 18:21:57,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b969b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 06:21:57, skipping insertion in model container [2021-02-19 18:21:57,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:21:53" (2/3) ... [2021-02-19 18:21:57,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b969b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 06:21:57, skipping insertion in model container [2021-02-19 18:21:57,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 06:21:57" (3/3) ... [2021-02-19 18:21:57,408 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-19 18:21:57,416 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 18:21:57,422 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2021-02-19 18:21:57,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-02-19 18:21:57,481 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 18:21:57,481 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 18:21:57,481 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 18:21:57,481 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 18:21:57,481 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 18:21:57,482 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 18:21:57,482 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 18:21:57,482 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 18:21:57,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2021-02-19 18:21:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-02-19 18:21:57,561 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:21:57,563 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] [2021-02-19 18:21:57,563 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]=== [2021-02-19 18:21:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:21:57,571 INFO L82 PathProgramCache]: Analyzing trace with hash -766055028, now seen corresponding path program 1 times [2021-02-19 18:21:57,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:21:57,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150808840] [2021-02-19 18:21:57,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:21:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:21:58,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:21:58,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:21:58,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:21:58,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 18:21:58,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:21:58,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:21:59,345 WARN L202 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:21:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:21:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:21:59,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:21:59,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:21:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:21:59,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150808840] [2021-02-19 18:21:59,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:21:59,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 18:21:59,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42908973] [2021-02-19 18:21:59,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 18:21:59,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:21:59,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 18:21:59,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:21:59,635 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 4 states. [2021-02-19 18:22:00,650 WARN L202 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2021-02-19 18:22:09,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:22:09,083 INFO L93 Difference]: Finished difference Result 1807 states and 3208 transitions. [2021-02-19 18:22:09,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 18:22:09,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2021-02-19 18:22:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:22:09,120 INFO L225 Difference]: With dead ends: 1807 [2021-02-19 18:22:09,121 INFO L226 Difference]: Without dead ends: 1529 [2021-02-19 18:22:09,128 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 [2021-02-19 18:22:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-02-19 18:22:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2021-02-19 18:22:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2021-02-19 18:22:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2336 transitions. [2021-02-19 18:22:09,291 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2336 transitions. Word has length 327 [2021-02-19 18:22:09,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:22:09,297 INFO L480 AbstractCegarLoop]: Abstraction has 1527 states and 2336 transitions. [2021-02-19 18:22:09,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 18:22:09,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2336 transitions. [2021-02-19 18:22:09,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-02-19 18:22:09,318 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:22:09,319 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] [2021-02-19 18:22:09,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 18:22:09,322 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]=== [2021-02-19 18:22:09,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:22:09,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1649642111, now seen corresponding path program 1 times [2021-02-19 18:22:09,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:22:09,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110563158] [2021-02-19 18:22:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:22:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:22:09,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:09,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:09,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:09,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 18:22:09,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:09,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:10,747 WARN L202 SmtUtils]: Spent 976.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:22:10,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:22:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:22:10,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:10,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:22:11,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110563158] [2021-02-19 18:22:11,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:22:11,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 18:22:11,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671877554] [2021-02-19 18:22:11,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 18:22:11,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:22:11,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 18:22:11,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:22:11,040 INFO L87 Difference]: Start difference. First operand 1527 states and 2336 transitions. Second operand 4 states. [2021-02-19 18:22:11,962 WARN L202 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2021-02-19 18:22:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:22:19,573 INFO L93 Difference]: Finished difference Result 2982 states and 4621 transitions. [2021-02-19 18:22:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 18:22:19,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2021-02-19 18:22:19,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:22:19,593 INFO L225 Difference]: With dead ends: 2982 [2021-02-19 18:22:19,593 INFO L226 Difference]: Without dead ends: 2611 [2021-02-19 18:22:19,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-19 18:22:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-02-19 18:22:19,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2609. [2021-02-19 18:22:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2609 states. [2021-02-19 18:22:19,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 4019 transitions. [2021-02-19 18:22:19,701 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 4019 transitions. Word has length 327 [2021-02-19 18:22:19,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:22:19,702 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 4019 transitions. [2021-02-19 18:22:19,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 18:22:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 4019 transitions. [2021-02-19 18:22:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-02-19 18:22:19,713 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:22:19,713 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] [2021-02-19 18:22:19,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 18:22:19,714 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]=== [2021-02-19 18:22:19,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:22:19,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1649980735, now seen corresponding path program 1 times [2021-02-19 18:22:19,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:22:19,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017403151] [2021-02-19 18:22:19,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:22:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:22:20,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:20,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:20,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:20,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 18:22:20,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:20,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-19 18:22:20,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:20,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:21,152 WARN L202 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:22:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:22:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:22:21,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:21,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:22:21,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017403151] [2021-02-19 18:22:21,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:22:21,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 18:22:21,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105202499] [2021-02-19 18:22:21,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 18:22:21,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:22:21,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 18:22:21,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-19 18:22:21,340 INFO L87 Difference]: Start difference. First operand 2609 states and 4019 transitions. Second operand 5 states. [2021-02-19 18:22:31,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:22:31,414 INFO L93 Difference]: Finished difference Result 7717 states and 11876 transitions. [2021-02-19 18:22:31,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 18:22:31,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2021-02-19 18:22:31,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:22:31,443 INFO L225 Difference]: With dead ends: 7717 [2021-02-19 18:22:31,443 INFO L226 Difference]: Without dead ends: 5123 [2021-02-19 18:22:31,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:22:31,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2021-02-19 18:22:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 4916. [2021-02-19 18:22:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4916 states. [2021-02-19 18:22:31,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 7571 transitions. [2021-02-19 18:22:31,675 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 7571 transitions. Word has length 327 [2021-02-19 18:22:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:22:31,676 INFO L480 AbstractCegarLoop]: Abstraction has 4916 states and 7571 transitions. [2021-02-19 18:22:31,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 18:22:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 7571 transitions. [2021-02-19 18:22:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-02-19 18:22:31,691 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:22:31,691 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] [2021-02-19 18:22:31,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 18:22:31,692 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]=== [2021-02-19 18:22:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:22:31,692 INFO L82 PathProgramCache]: Analyzing trace with hash 802027803, now seen corresponding path program 1 times [2021-02-19 18:22:31,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:22:31,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486121385] [2021-02-19 18:22:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:22:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:22:31,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:31,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:31,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:31,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 18:22:31,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:31,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:32,802 WARN L202 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:22:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:22:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:22:32,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:32,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:22:33,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486121385] [2021-02-19 18:22:33,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:22:33,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 18:22:33,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370116008] [2021-02-19 18:22:33,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 18:22:33,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:22:33,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 18:22:33,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:22:33,044 INFO L87 Difference]: Start difference. First operand 4916 states and 7571 transitions. Second operand 4 states. [2021-02-19 18:22:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:22:44,816 INFO L93 Difference]: Finished difference Result 14441 states and 22189 transitions. [2021-02-19 18:22:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 18:22:44,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2021-02-19 18:22:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:22:44,865 INFO L225 Difference]: With dead ends: 14441 [2021-02-19 18:22:44,867 INFO L226 Difference]: Without dead ends: 9654 [2021-02-19 18:22:44,881 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 [2021-02-19 18:22:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9654 states. [2021-02-19 18:22:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9654 to 9447. [2021-02-19 18:22:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9447 states. [2021-02-19 18:22:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9447 states to 9447 states and 14507 transitions. [2021-02-19 18:22:45,325 INFO L78 Accepts]: Start accepts. Automaton has 9447 states and 14507 transitions. Word has length 329 [2021-02-19 18:22:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:22:45,326 INFO L480 AbstractCegarLoop]: Abstraction has 9447 states and 14507 transitions. [2021-02-19 18:22:45,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 18:22:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 9447 states and 14507 transitions. [2021-02-19 18:22:45,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-02-19 18:22:45,347 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:22:45,347 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] [2021-02-19 18:22:45,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 18:22:45,348 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]=== [2021-02-19 18:22:45,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:22:45,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1387510922, now seen corresponding path program 1 times [2021-02-19 18:22:45,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:22:45,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576889070] [2021-02-19 18:22:45,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:22:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:22:45,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:45,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:45,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:45,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 18:22:45,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:45,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:46,330 WARN L202 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:22:46,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:22:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:22:46,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:46,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:22:46,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576889070] [2021-02-19 18:22:46,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:22:46,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 18:22:46,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296630884] [2021-02-19 18:22:46,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 18:22:46,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:22:46,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 18:22:46,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:22:46,541 INFO L87 Difference]: Start difference. First operand 9447 states and 14507 transitions. Second operand 4 states. [2021-02-19 18:22:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:22:58,591 INFO L93 Difference]: Finished difference Result 28266 states and 43397 transitions. [2021-02-19 18:22:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 18:22:58,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2021-02-19 18:22:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:22:58,659 INFO L225 Difference]: With dead ends: 28266 [2021-02-19 18:22:58,660 INFO L226 Difference]: Without dead ends: 18861 [2021-02-19 18:22:58,682 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 [2021-02-19 18:22:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18861 states. [2021-02-19 18:22:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18861 to 9466. [2021-02-19 18:22:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9466 states. [2021-02-19 18:22:59,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9466 states to 9466 states and 14535 transitions. [2021-02-19 18:22:59,156 INFO L78 Accepts]: Start accepts. Automaton has 9466 states and 14535 transitions. Word has length 329 [2021-02-19 18:22:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:22:59,157 INFO L480 AbstractCegarLoop]: Abstraction has 9466 states and 14535 transitions. [2021-02-19 18:22:59,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 18:22:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 9466 states and 14535 transitions. [2021-02-19 18:22:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-02-19 18:22:59,179 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:22:59,180 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] [2021-02-19 18:22:59,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-19 18:22:59,180 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]=== [2021-02-19 18:22:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:22:59,181 INFO L82 PathProgramCache]: Analyzing trace with hash 545918961, now seen corresponding path program 1 times [2021-02-19 18:22:59,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:22:59,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389111803] [2021-02-19 18:22:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:22:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:22:59,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:59,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:22:59,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:59,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 18:22:59,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:22:59,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:00,202 WARN L202 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:23:00,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:23:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:23:00,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:00,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:23:00,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389111803] [2021-02-19 18:23:00,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:23:00,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 18:23:00,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602210666] [2021-02-19 18:23:00,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 18:23:00,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:23:00,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 18:23:00,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:23:00,332 INFO L87 Difference]: Start difference. First operand 9466 states and 14535 transitions. Second operand 4 states. [2021-02-19 18:23:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:23:12,671 INFO L93 Difference]: Finished difference Result 28285 states and 43418 transitions. [2021-02-19 18:23:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 18:23:12,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2021-02-19 18:23:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:23:12,713 INFO L225 Difference]: With dead ends: 28285 [2021-02-19 18:23:12,713 INFO L226 Difference]: Without dead ends: 18879 [2021-02-19 18:23:12,733 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 [2021-02-19 18:23:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18879 states. [2021-02-19 18:23:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18879 to 9484. [2021-02-19 18:23:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9484 states. [2021-02-19 18:23:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9484 states to 9484 states and 14556 transitions. [2021-02-19 18:23:13,301 INFO L78 Accepts]: Start accepts. Automaton has 9484 states and 14556 transitions. Word has length 330 [2021-02-19 18:23:13,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:23:13,302 INFO L480 AbstractCegarLoop]: Abstraction has 9484 states and 14556 transitions. [2021-02-19 18:23:13,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 18:23:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand 9484 states and 14556 transitions. [2021-02-19 18:23:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-02-19 18:23:13,323 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:23:13,324 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] [2021-02-19 18:23:13,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-19 18:23:13,324 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]=== [2021-02-19 18:23:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:23:13,325 INFO L82 PathProgramCache]: Analyzing trace with hash -287995232, now seen corresponding path program 1 times [2021-02-19 18:23:13,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:23:13,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797787631] [2021-02-19 18:23:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:23:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:23:13,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:13,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:13,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:13,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 18:23:13,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:13,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:14,361 WARN L202 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:23:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:23:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:23:14,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:14,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:23:14,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797787631] [2021-02-19 18:23:14,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:23:14,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 18:23:14,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973389959] [2021-02-19 18:23:14,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 18:23:14,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:23:14,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 18:23:14,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:23:14,530 INFO L87 Difference]: Start difference. First operand 9484 states and 14556 transitions. Second operand 4 states. [2021-02-19 18:23:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:23:26,887 INFO L93 Difference]: Finished difference Result 27761 states and 42501 transitions. [2021-02-19 18:23:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 18:23:26,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2021-02-19 18:23:26,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:23:26,926 INFO L225 Difference]: With dead ends: 27761 [2021-02-19 18:23:26,926 INFO L226 Difference]: Without dead ends: 18522 [2021-02-19 18:23:26,945 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 [2021-02-19 18:23:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18522 states. [2021-02-19 18:23:27,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18522 to 18315. [2021-02-19 18:23:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18315 states. [2021-02-19 18:23:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18315 states to 18315 states and 27960 transitions. [2021-02-19 18:23:27,776 INFO L78 Accepts]: Start accepts. Automaton has 18315 states and 27960 transitions. Word has length 331 [2021-02-19 18:23:27,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:23:27,776 INFO L480 AbstractCegarLoop]: Abstraction has 18315 states and 27960 transitions. [2021-02-19 18:23:27,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 18:23:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 18315 states and 27960 transitions. [2021-02-19 18:23:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-02-19 18:23:27,827 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:23:27,827 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] [2021-02-19 18:23:27,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-19 18:23:27,828 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]=== [2021-02-19 18:23:27,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:23:27,828 INFO L82 PathProgramCache]: Analyzing trace with hash -192048477, now seen corresponding path program 1 times [2021-02-19 18:23:27,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:23:27,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614465663] [2021-02-19 18:23:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:23:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:23:28,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:28,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:28,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:28,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 18:23:28,236 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-19 18:23:28,237 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-19 18:23:28,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:28,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-19 18:23:28,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:28,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:29,080 WARN L202 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:23:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:23:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:23:29,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:29,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:23:29,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614465663] [2021-02-19 18:23:29,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:23:29,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 18:23:29,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638204540] [2021-02-19 18:23:29,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 18:23:29,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:23:29,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 18:23:29,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:23:29,293 INFO L87 Difference]: Start difference. First operand 18315 states and 27960 transitions. Second operand 6 states. [2021-02-19 18:23:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:23:41,013 INFO L93 Difference]: Finished difference Result 53907 states and 82129 transitions. [2021-02-19 18:23:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 18:23:41,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 331 [2021-02-19 18:23:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:23:41,064 INFO L225 Difference]: With dead ends: 53907 [2021-02-19 18:23:41,064 INFO L226 Difference]: Without dead ends: 35651 [2021-02-19 18:23:41,098 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 [2021-02-19 18:23:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35651 states. [2021-02-19 18:23:42,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35651 to 35460. [2021-02-19 18:23:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35460 states. [2021-02-19 18:23:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35460 states to 35460 states and 53697 transitions. [2021-02-19 18:23:42,543 INFO L78 Accepts]: Start accepts. Automaton has 35460 states and 53697 transitions. Word has length 331 [2021-02-19 18:23:42,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:23:42,543 INFO L480 AbstractCegarLoop]: Abstraction has 35460 states and 53697 transitions. [2021-02-19 18:23:42,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-19 18:23:42,543 INFO L276 IsEmpty]: Start isEmpty. Operand 35460 states and 53697 transitions. [2021-02-19 18:23:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-02-19 18:23:42,632 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:23:42,632 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] [2021-02-19 18:23:42,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-19 18:23:42,633 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]=== [2021-02-19 18:23:42,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:23:42,633 INFO L82 PathProgramCache]: Analyzing trace with hash 44375133, now seen corresponding path program 1 times [2021-02-19 18:23:42,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:23:42,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430908228] [2021-02-19 18:23:42,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:23:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:23:42,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:42,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:42,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:42,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 18:23:42,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:42,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:43,672 WARN L202 SmtUtils]: Spent 853.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:23:43,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:23:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:23:43,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:23:43,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:23:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:23:44,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430908228] [2021-02-19 18:23:44,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:23:44,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 18:23:44,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685733643] [2021-02-19 18:23:44,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 18:23:44,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:23:44,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 18:23:44,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:23:44,121 INFO L87 Difference]: Start difference. First operand 35460 states and 53697 transitions. Second operand 4 states. [2021-02-19 18:23:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:23:57,384 INFO L93 Difference]: Finished difference Result 104308 states and 157578 transitions. [2021-02-19 18:23:57,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 18:23:57,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2021-02-19 18:23:57,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:23:57,478 INFO L225 Difference]: With dead ends: 104308 [2021-02-19 18:23:57,479 INFO L226 Difference]: Without dead ends: 69369 [2021-02-19 18:23:57,524 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 [2021-02-19 18:23:57,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69369 states. [2021-02-19 18:24:00,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69369 to 69194. [2021-02-19 18:24:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69194 states. [2021-02-19 18:24:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69194 states to 69194 states and 103954 transitions. [2021-02-19 18:24:00,741 INFO L78 Accepts]: Start accepts. Automaton has 69194 states and 103954 transitions. Word has length 333 [2021-02-19 18:24:00,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:24:00,742 INFO L480 AbstractCegarLoop]: Abstraction has 69194 states and 103954 transitions. [2021-02-19 18:24:00,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 18:24:00,742 INFO L276 IsEmpty]: Start isEmpty. Operand 69194 states and 103954 transitions. [2021-02-19 18:24:00,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-02-19 18:24:00,809 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:24:00,810 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] [2021-02-19 18:24:00,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-19 18:24:00,810 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]=== [2021-02-19 18:24:00,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:24:00,813 INFO L82 PathProgramCache]: Analyzing trace with hash 196430112, now seen corresponding path program 1 times [2021-02-19 18:24:00,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:24:00,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972352298] [2021-02-19 18:24:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:24:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:24:01,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:24:01,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:24:01,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:24:01,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 18:24:01,256 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-19 18:24:01,257 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-19 18:24:01,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:24:01,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-19 18:24:01,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:24:01,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:24:02,260 WARN L202 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:24:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:24:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:24:02,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:24:02,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:24:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:24:02,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972352298] [2021-02-19 18:24:02,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:24:02,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 18:24:02,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178531446] [2021-02-19 18:24:02,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 18:24:02,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:24:02,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 18:24:02,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:24:02,594 INFO L87 Difference]: Start difference. First operand 69194 states and 103954 transitions. Second operand 6 states. [2021-02-19 18:24:18,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:24:18,462 INFO L93 Difference]: Finished difference Result 204219 states and 306172 transitions. [2021-02-19 18:24:18,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 18:24:18,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 333 [2021-02-19 18:24:18,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:24:18,629 INFO L225 Difference]: With dead ends: 204219 [2021-02-19 18:24:18,630 INFO L226 Difference]: Without dead ends: 135180 [2021-02-19 18:24:18,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:24:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135180 states. [2021-02-19 18:24:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135180 to 135069. [2021-02-19 18:24:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135069 states. [2021-02-19 18:24:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135069 states to 135069 states and 201214 transitions. [2021-02-19 18:24:24,792 INFO L78 Accepts]: Start accepts. Automaton has 135069 states and 201214 transitions. Word has length 333 [2021-02-19 18:24:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:24:24,793 INFO L480 AbstractCegarLoop]: Abstraction has 135069 states and 201214 transitions. [2021-02-19 18:24:24,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-19 18:24:24,793 INFO L276 IsEmpty]: Start isEmpty. Operand 135069 states and 201214 transitions. [2021-02-19 18:24:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-02-19 18:24:24,892 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:24:24,892 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] [2021-02-19 18:24:24,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-19 18:24:24,892 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]=== [2021-02-19 18:24:24,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:24:25,126 INFO L82 PathProgramCache]: Analyzing trace with hash -19893751, now seen corresponding path program 1 times [2021-02-19 18:24:25,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:24:25,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430724406] [2021-02-19 18:24:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:24:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:24:25,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:24:25,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:24:25,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:24:25,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 18:24:25,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:24:25,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-19 18:24:25,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:24:25,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:24:26,429 WARN L202 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:24:26,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:24:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:24:26,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:24:26,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:24:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:24:26,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430724406] [2021-02-19 18:24:26,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:24:26,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 18:24:26,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128227336] [2021-02-19 18:24:26,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 18:24:26,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:24:26,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 18:24:26,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-19 18:24:26,692 INFO L87 Difference]: Start difference. First operand 135069 states and 201214 transitions. Second operand 5 states. [2021-02-19 18:24:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:24:48,973 INFO L93 Difference]: Finished difference Result 399538 states and 594215 transitions. [2021-02-19 18:24:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 18:24:48,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2021-02-19 18:24:48,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:24:49,706 INFO L225 Difference]: With dead ends: 399538 [2021-02-19 18:24:49,706 INFO L226 Difference]: Without dead ends: 264755 [2021-02-19 18:24:49,818 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 [2021-02-19 18:24:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264755 states. [2021-02-19 18:25:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264755 to 264356. [2021-02-19 18:25:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264356 states. [2021-02-19 18:25:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264356 states to 264356 states and 391022 transitions. [2021-02-19 18:25:03,283 INFO L78 Accepts]: Start accepts. Automaton has 264356 states and 391022 transitions. Word has length 333 [2021-02-19 18:25:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:25:03,284 INFO L480 AbstractCegarLoop]: Abstraction has 264356 states and 391022 transitions. [2021-02-19 18:25:03,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 18:25:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 264356 states and 391022 transitions. [2021-02-19 18:25:03,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-02-19 18:25:03,491 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:25:03,492 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] [2021-02-19 18:25:03,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-19 18:25:03,492 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]=== [2021-02-19 18:25:03,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:25:03,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1360359783, now seen corresponding path program 1 times [2021-02-19 18:25:03,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:25:03,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267552178] [2021-02-19 18:25:03,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:25:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:25:04,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:25:04,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:25:04,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:25:04,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 18:25:04,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:25:04,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:25:05,158 WARN L202 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:25:05,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:25:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:25:05,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:25:05,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:25:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:25:05,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267552178] [2021-02-19 18:25:05,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:25:05,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 18:25:05,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478209198] [2021-02-19 18:25:05,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 18:25:05,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:25:05,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 18:25:05,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:25:05,429 INFO L87 Difference]: Start difference. First operand 264356 states and 391022 transitions. Second operand 4 states. [2021-02-19 18:25:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:25:41,553 INFO L93 Difference]: Finished difference Result 790368 states and 1168546 transitions. [2021-02-19 18:25:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 18:25:41,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2021-02-19 18:25:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:25:42,517 INFO L225 Difference]: With dead ends: 790368 [2021-02-19 18:25:42,517 INFO L226 Difference]: Without dead ends: 526599 [2021-02-19 18:25:42,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:25:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526599 states. [2021-02-19 18:25:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526599 to 264514. [2021-02-19 18:25:58,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264514 states. [2021-02-19 18:25:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264514 states to 264514 states and 391232 transitions. [2021-02-19 18:25:59,350 INFO L78 Accepts]: Start accepts. Automaton has 264514 states and 391232 transitions. Word has length 335 [2021-02-19 18:25:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:25:59,350 INFO L480 AbstractCegarLoop]: Abstraction has 264514 states and 391232 transitions. [2021-02-19 18:25:59,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 18:25:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 264514 states and 391232 transitions. [2021-02-19 18:25:59,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-02-19 18:25:59,575 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:25:59,575 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] [2021-02-19 18:25:59,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-19 18:25:59,575 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]=== [2021-02-19 18:25:59,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:25:59,576 INFO L82 PathProgramCache]: Analyzing trace with hash -303724852, now seen corresponding path program 1 times [2021-02-19 18:25:59,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:25:59,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767029393] [2021-02-19 18:25:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:25:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:25:59,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:25:59,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:25:59,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:25:59,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 18:25:59,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:25:59,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:26:01,093 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 352 [2021-02-19 18:26:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:26:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:26:01,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:26:01,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:26:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:26:01,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767029393] [2021-02-19 18:26:01,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:26:01,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 18:26:01,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265375556] [2021-02-19 18:26:01,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 18:26:01,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:26:01,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 18:26:01,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:26:01,306 INFO L87 Difference]: Start difference. First operand 264514 states and 391232 transitions. Second operand 4 states. [2021-02-19 18:26:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:26:40,844 INFO L93 Difference]: Finished difference Result 780533 states and 1152006 transitions. [2021-02-19 18:26:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 18:26:40,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2021-02-19 18:26:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:26:42,099 INFO L225 Difference]: With dead ends: 780533 [2021-02-19 18:26:42,100 INFO L226 Difference]: Without dead ends: 518694 [2021-02-19 18:26:42,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:26:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518694 states.