/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:45:26,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:45:26,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:45:26,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:45:26,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:45:26,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:45:26,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:45:26,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:45:26,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:45:26,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:45:26,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:45:26,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:45:26,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:45:26,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:45:26,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:45:26,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:45:26,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:45:26,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:45:26,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:45:26,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:45:26,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:45:26,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:45:26,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:45:26,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:45:26,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:45:26,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:45:26,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:45:26,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:45:26,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:45:26,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:45:26,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:45:26,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:45:26,275 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:45:26,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:45:26,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:45:26,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:45:26,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:45:26,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:45:26,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:45:26,278 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:45:26,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:45:26,278 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:45:26,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:45:26,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:45:26,279 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:45:26,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:45:26,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:45:26,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:45:26,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:45:26,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:45:26,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:45:26,280 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:45:26,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:45:26,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:45:26,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:45:26,732 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:45:26,732 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:45:26,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-02-21 21:45:26,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1b1880e/7baed71aea58440aabc36639d5f09117/FLAGc13662d4b [2021-02-21 21:45:27,555 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:45:27,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-02-21 21:45:27,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1b1880e/7baed71aea58440aabc36639d5f09117/FLAGc13662d4b [2021-02-21 21:45:27,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1b1880e/7baed71aea58440aabc36639d5f09117 [2021-02-21 21:45:27,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:45:27,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:45:27,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:45:27,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:45:27,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:45:27,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:45:27" (1/1) ... [2021-02-21 21:45:27,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8e2eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:27, skipping insertion in model container [2021-02-21 21:45:27,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:45:27" (1/1) ... [2021-02-21 21:45:27,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:45:27,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:45:28,214 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15041,15054] [2021-02-21 21:45:28,229 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15688,15701] [2021-02-21 21:45:28,263 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17029,17042] [2021-02-21 21:45:28,294 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18089,18102] [2021-02-21 21:45:28,401 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27374,27387] [2021-02-21 21:45:28,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:45:28,476 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:45:28,620 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15041,15054] [2021-02-21 21:45:28,636 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15688,15701] [2021-02-21 21:45:28,661 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17029,17042] [2021-02-21 21:45:28,675 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18089,18102] [2021-02-21 21:45:28,725 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27374,27387] [2021-02-21 21:45:28,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:45:28,797 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:45:28,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:28 WrapperNode [2021-02-21 21:45:28,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:45:28,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:45:28,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:45:28,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:45:28,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:28" (1/1) ... [2021-02-21 21:45:28,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:28" (1/1) ... [2021-02-21 21:45:28,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:28" (1/1) ... [2021-02-21 21:45:28,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:28" (1/1) ... [2021-02-21 21:45:28,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:28" (1/1) ... [2021-02-21 21:45:28,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:28" (1/1) ... [2021-02-21 21:45:28,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:28" (1/1) ... [2021-02-21 21:45:28,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:45:28,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:45:28,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:45:28,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:45:28,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:45:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:45:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:45:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:45:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:45:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:45:29,064 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:45:29,064 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:45:29,064 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:45:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:45:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-21 21:45:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-21 21:45:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-21 21:45:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:45:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-21 21:45:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-21 21:45:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-21 21:45:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-21 21:45:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-21 21:45:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-21 21:45:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-21 21:45:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:45:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:45:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:45:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:45:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:45:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:45:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:45:31,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:45:31,050 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 21:45:31,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:45:31 BoogieIcfgContainer [2021-02-21 21:45:31,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:45:31,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:45:31,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:45:31,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:45:31,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:45:27" (1/3) ... [2021-02-21 21:45:31,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9f6819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:45:31, skipping insertion in model container [2021-02-21 21:45:31,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:28" (2/3) ... [2021-02-21 21:45:31,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9f6819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:45:31, skipping insertion in model container [2021-02-21 21:45:31,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:45:31" (3/3) ... [2021-02-21 21:45:31,068 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-02-21 21:45:31,075 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:45:31,082 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-02-21 21:45:31,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-02-21 21:45:31,140 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:45:31,140 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:45:31,141 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:45:31,141 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:45:31,141 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:45:31,141 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:45:31,141 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:45:31,142 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:45:31,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states. [2021-02-21 21:45:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-02-21 21:45:31,260 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:45:31,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:45:31,262 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:45:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:45:31,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1762420546, now seen corresponding path program 1 times [2021-02-21 21:45:31,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:45:31,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466345476] [2021-02-21 21:45:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:45:31,362 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:45:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:32,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:32,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:32,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:32,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:45:32,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:32,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:45:32,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:32,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:32,705 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:45:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:45:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:32,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:32,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:45:33,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466345476] [2021-02-21 21:45:33,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:45:33,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:45:33,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787297393] [2021-02-21 21:45:33,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:45:33,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:45:33,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:45:33,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:45:33,242 INFO L87 Difference]: Start difference. First operand 1245 states. Second operand 5 states. [2021-02-21 21:45:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:45:41,423 INFO L93 Difference]: Finished difference Result 3285 states and 4210 transitions. [2021-02-21 21:45:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:45:41,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 473 [2021-02-21 21:45:41,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:45:41,457 INFO L225 Difference]: With dead ends: 3285 [2021-02-21 21:45:41,458 INFO L226 Difference]: Without dead ends: 1968 [2021-02-21 21:45:41,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:45:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-02-21 21:45:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1841. [2021-02-21 21:45:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1841 states. [2021-02-21 21:45:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2177 transitions. [2021-02-21 21:45:41,744 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2177 transitions. Word has length 473 [2021-02-21 21:45:41,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:45:41,750 INFO L480 AbstractCegarLoop]: Abstraction has 1841 states and 2177 transitions. [2021-02-21 21:45:41,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:45:41,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2177 transitions. [2021-02-21 21:45:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-02-21 21:45:41,772 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:45:41,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:45:41,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:45:41,774 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:45:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:45:41,776 INFO L82 PathProgramCache]: Analyzing trace with hash -94039718, now seen corresponding path program 1 times [2021-02-21 21:45:41,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:45:41,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408344655] [2021-02-21 21:45:41,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:45:41,790 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:45:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:41,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:41,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:41,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:41,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:45:42,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:42,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:42,438 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:45:42,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:45:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:42,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:42,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:45:42,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408344655] [2021-02-21 21:45:42,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:45:42,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:45:42,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401188371] [2021-02-21 21:45:42,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:45:42,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:45:42,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:45:42,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:45:42,712 INFO L87 Difference]: Start difference. First operand 1841 states and 2177 transitions. Second operand 4 states. [2021-02-21 21:45:50,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:45:50,206 INFO L93 Difference]: Finished difference Result 5086 states and 6070 transitions. [2021-02-21 21:45:50,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:45:50,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 474 [2021-02-21 21:45:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:45:50,226 INFO L225 Difference]: With dead ends: 5086 [2021-02-21 21:45:50,227 INFO L226 Difference]: Without dead ends: 3479 [2021-02-21 21:45:50,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:45:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2021-02-21 21:45:50,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 1843. [2021-02-21 21:45:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2021-02-21 21:45:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2179 transitions. [2021-02-21 21:45:50,426 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2179 transitions. Word has length 474 [2021-02-21 21:45:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:45:50,428 INFO L480 AbstractCegarLoop]: Abstraction has 1843 states and 2179 transitions. [2021-02-21 21:45:50,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:45:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2179 transitions. [2021-02-21 21:45:50,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-02-21 21:45:50,443 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:45:50,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:45:50,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:45:50,444 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:45:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:45:50,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1648812603, now seen corresponding path program 1 times [2021-02-21 21:45:50,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:45:50,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417161743] [2021-02-21 21:45:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:45:50,456 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:45:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:50,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:50,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:50,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:50,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:45:50,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:50,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:51,076 WARN L202 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:45:51,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:45:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:51,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:51,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:45:51,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417161743] [2021-02-21 21:45:51,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:45:51,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:45:51,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499331608] [2021-02-21 21:45:51,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:45:51,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:45:51,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:45:51,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:45:51,312 INFO L87 Difference]: Start difference. First operand 1843 states and 2179 transitions. Second operand 4 states. [2021-02-21 21:45:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:45:58,531 INFO L93 Difference]: Finished difference Result 4776 states and 5680 transitions. [2021-02-21 21:45:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:45:58,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 475 [2021-02-21 21:45:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:45:58,555 INFO L225 Difference]: With dead ends: 4776 [2021-02-21 21:45:58,555 INFO L226 Difference]: Without dead ends: 3405 [2021-02-21 21:45:58,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:45:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2021-02-21 21:45:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3278. [2021-02-21 21:45:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3278 states. [2021-02-21 21:45:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 3906 transitions. [2021-02-21 21:45:58,828 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 3906 transitions. Word has length 475 [2021-02-21 21:45:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:45:58,828 INFO L480 AbstractCegarLoop]: Abstraction has 3278 states and 3906 transitions. [2021-02-21 21:45:58,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:45:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 3906 transitions. [2021-02-21 21:45:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-02-21 21:45:58,839 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:45:58,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:45:58,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:45:58,840 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:45:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:45:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash 531411387, now seen corresponding path program 1 times [2021-02-21 21:45:58,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:45:58,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685540594] [2021-02-21 21:45:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:45:58,848 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:45:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:59,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:59,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:59,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:59,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:45:59,190 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-21 21:45:59,191 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-21 21:45:59,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:59,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:45:59,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:59,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:59,666 WARN L202 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:45:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:45:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:59,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:59,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:45:59,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685540594] [2021-02-21 21:45:59,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:45:59,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:45:59,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409630251] [2021-02-21 21:45:59,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:45:59,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:45:59,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:45:59,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:45:59,885 INFO L87 Difference]: Start difference. First operand 3278 states and 3906 transitions. Second operand 6 states. [2021-02-21 21:46:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:06,512 INFO L93 Difference]: Finished difference Result 8948 states and 10693 transitions. [2021-02-21 21:46:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:46:06,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 475 [2021-02-21 21:46:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:06,554 INFO L225 Difference]: With dead ends: 8948 [2021-02-21 21:46:06,554 INFO L226 Difference]: Without dead ends: 5875 [2021-02-21 21:46:06,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:46:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2021-02-21 21:46:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5760. [2021-02-21 21:46:07,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5760 states. [2021-02-21 21:46:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 6847 transitions. [2021-02-21 21:46:07,018 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 6847 transitions. Word has length 475 [2021-02-21 21:46:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:07,019 INFO L480 AbstractCegarLoop]: Abstraction has 5760 states and 6847 transitions. [2021-02-21 21:46:07,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:46:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 6847 transitions. [2021-02-21 21:46:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-02-21 21:46:07,033 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:07,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:07,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:46:07,034 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:07,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:07,035 INFO L82 PathProgramCache]: Analyzing trace with hash 392867480, now seen corresponding path program 1 times [2021-02-21 21:46:07,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:07,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352572890] [2021-02-21 21:46:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:07,039 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:07,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:07,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:07,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:07,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:07,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:07,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:46:07,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:07,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:07,719 WARN L202 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:46:07,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:07,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:07,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:07,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352572890] [2021-02-21 21:46:07,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:07,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:46:07,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105215825] [2021-02-21 21:46:07,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:46:07,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:07,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:46:07,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:46:07,933 INFO L87 Difference]: Start difference. First operand 5760 states and 6847 transitions. Second operand 5 states. [2021-02-21 21:46:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:15,060 INFO L93 Difference]: Finished difference Result 16451 states and 19566 transitions. [2021-02-21 21:46:15,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:46:15,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 475 [2021-02-21 21:46:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:15,109 INFO L225 Difference]: With dead ends: 16451 [2021-02-21 21:46:15,109 INFO L226 Difference]: Without dead ends: 10971 [2021-02-21 21:46:15,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:46:15,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states. [2021-02-21 21:46:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 10837. [2021-02-21 21:46:16,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10837 states. [2021-02-21 21:46:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10837 states to 10837 states and 12842 transitions. [2021-02-21 21:46:16,324 INFO L78 Accepts]: Start accepts. Automaton has 10837 states and 12842 transitions. Word has length 475 [2021-02-21 21:46:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:16,325 INFO L480 AbstractCegarLoop]: Abstraction has 10837 states and 12842 transitions. [2021-02-21 21:46:16,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:46:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 10837 states and 12842 transitions. [2021-02-21 21:46:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-02-21 21:46:16,347 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:16,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:16,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:46:16,349 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:16,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1326083860, now seen corresponding path program 1 times [2021-02-21 21:46:16,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:16,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431613936] [2021-02-21 21:46:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:16,354 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:16,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:16,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:16,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:16,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:46:16,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:16,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:16,842 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:46:16,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:16,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:16,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:17,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431613936] [2021-02-21 21:46:17,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:17,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:46:17,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078390106] [2021-02-21 21:46:17,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:46:17,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:17,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:46:17,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:17,044 INFO L87 Difference]: Start difference. First operand 10837 states and 12842 transitions. Second operand 4 states. [2021-02-21 21:46:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:25,186 INFO L93 Difference]: Finished difference Result 31886 states and 37820 transitions. [2021-02-21 21:46:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:25,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 476 [2021-02-21 21:46:25,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:25,252 INFO L225 Difference]: With dead ends: 31886 [2021-02-21 21:46:25,252 INFO L226 Difference]: Without dead ends: 21379 [2021-02-21 21:46:25,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:25,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21379 states. [2021-02-21 21:46:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21379 to 10847. [2021-02-21 21:46:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10847 states. [2021-02-21 21:46:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10847 states to 10847 states and 12852 transitions. [2021-02-21 21:46:26,441 INFO L78 Accepts]: Start accepts. Automaton has 10847 states and 12852 transitions. Word has length 476 [2021-02-21 21:46:26,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:26,442 INFO L480 AbstractCegarLoop]: Abstraction has 10847 states and 12852 transitions. [2021-02-21 21:46:26,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:46:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 10847 states and 12852 transitions. [2021-02-21 21:46:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-02-21 21:46:26,468 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:26,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:26,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:46:26,469 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:26,470 INFO L82 PathProgramCache]: Analyzing trace with hash -657574315, now seen corresponding path program 1 times [2021-02-21 21:46:26,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:26,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071437105] [2021-02-21 21:46:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:26,474 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:26,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:26,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:26,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:26,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:46:26,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:26,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:27,084 WARN L202 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:46:27,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:27,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:27,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:27,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071437105] [2021-02-21 21:46:27,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:27,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:46:27,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286539883] [2021-02-21 21:46:27,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:46:27,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:27,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:46:27,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:27,356 INFO L87 Difference]: Start difference. First operand 10847 states and 12852 transitions. Second operand 4 states. [2021-02-21 21:46:35,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:35,744 INFO L93 Difference]: Finished difference Result 30204 states and 35752 transitions. [2021-02-21 21:46:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:35,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 477 [2021-02-21 21:46:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:35,784 INFO L225 Difference]: With dead ends: 30204 [2021-02-21 21:46:35,785 INFO L226 Difference]: Without dead ends: 20866 [2021-02-21 21:46:35,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:35,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20866 states. [2021-02-21 21:46:37,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20866 to 20732. [2021-02-21 21:46:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20732 states. [2021-02-21 21:46:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20732 states to 20732 states and 24444 transitions. [2021-02-21 21:46:37,777 INFO L78 Accepts]: Start accepts. Automaton has 20732 states and 24444 transitions. Word has length 477 [2021-02-21 21:46:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:37,777 INFO L480 AbstractCegarLoop]: Abstraction has 20732 states and 24444 transitions. [2021-02-21 21:46:37,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:46:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 20732 states and 24444 transitions. [2021-02-21 21:46:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-02-21 21:46:37,811 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:37,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:37,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:46:37,812 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:37,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:37,812 INFO L82 PathProgramCache]: Analyzing trace with hash -861559339, now seen corresponding path program 1 times [2021-02-21 21:46:37,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:37,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902093612] [2021-02-21 21:46:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:37,816 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:37,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:37,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:37,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:37,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:38,001 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-21 21:46:38,003 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-21 21:46:38,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:38,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:46:38,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:38,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:38,562 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:46:38,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:38,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:38,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:38,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902093612] [2021-02-21 21:46:38,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:38,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:46:38,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221972225] [2021-02-21 21:46:38,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:46:38,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:38,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:46:38,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:46:38,802 INFO L87 Difference]: Start difference. First operand 20732 states and 24444 transitions. Second operand 6 states. [2021-02-21 21:46:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:48,860 INFO L93 Difference]: Finished difference Result 59049 states and 69521 transitions. [2021-02-21 21:46:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:46:48,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 477 [2021-02-21 21:46:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:48,921 INFO L225 Difference]: With dead ends: 59049 [2021-02-21 21:46:48,922 INFO L226 Difference]: Without dead ends: 38623 [2021-02-21 21:46:48,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:46:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38623 states. [2021-02-21 21:46:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38623 to 38514. [2021-02-21 21:46:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38514 states. [2021-02-21 21:46:52,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38514 states to 38514 states and 45053 transitions. [2021-02-21 21:46:52,959 INFO L78 Accepts]: Start accepts. Automaton has 38514 states and 45053 transitions. Word has length 477 [2021-02-21 21:46:52,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:52,959 INFO L480 AbstractCegarLoop]: Abstraction has 38514 states and 45053 transitions. [2021-02-21 21:46:52,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:46:52,960 INFO L276 IsEmpty]: Start isEmpty. Operand 38514 states and 45053 transitions. [2021-02-21 21:46:53,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-02-21 21:46:53,001 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:53,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:53,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:46:53,002 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:53,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:53,003 INFO L82 PathProgramCache]: Analyzing trace with hash -279396838, now seen corresponding path program 1 times [2021-02-21 21:46:53,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:53,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445243144] [2021-02-21 21:46:53,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:53,006 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:53,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:53,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:53,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:53,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:53,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:53,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:46:53,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:53,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:53,592 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:46:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:53,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:53,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:53,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445243144] [2021-02-21 21:46:53,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:53,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:46:53,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405211712] [2021-02-21 21:46:53,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:46:53,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:53,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:46:53,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:46:53,995 INFO L87 Difference]: Start difference. First operand 38514 states and 45053 transitions. Second operand 5 states. [2021-02-21 21:47:05,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:47:05,191 INFO L93 Difference]: Finished difference Result 77670 states and 90824 transitions. [2021-02-21 21:47:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:47:05,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 477 [2021-02-21 21:47:05,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:47:05,251 INFO L225 Difference]: With dead ends: 77670 [2021-02-21 21:47:05,251 INFO L226 Difference]: Without dead ends: 39963 [2021-02-21 21:47:05,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:47:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39963 states. [2021-02-21 21:47:09,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39963 to 39184. [2021-02-21 21:47:09,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39184 states. [2021-02-21 21:47:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39184 states to 39184 states and 45790 transitions. [2021-02-21 21:47:09,526 INFO L78 Accepts]: Start accepts. Automaton has 39184 states and 45790 transitions. Word has length 477 [2021-02-21 21:47:09,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:47:09,527 INFO L480 AbstractCegarLoop]: Abstraction has 39184 states and 45790 transitions. [2021-02-21 21:47:09,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:47:09,527 INFO L276 IsEmpty]: Start isEmpty. Operand 39184 states and 45790 transitions. [2021-02-21 21:47:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2021-02-21 21:47:09,558 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:47:09,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:47:09,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 21:47:09,559 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:47:09,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:47:09,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1659376170, now seen corresponding path program 1 times [2021-02-21 21:47:09,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:47:09,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214704750] [2021-02-21 21:47:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:47:09,563 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:47:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:09,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:09,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:09,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:09,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:47:09,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:09,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:10,236 WARN L202 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:47:10,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:47:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:10,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:10,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:47:10,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214704750] [2021-02-21 21:47:10,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:47:10,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:47:10,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215010999] [2021-02-21 21:47:10,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:47:10,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:47:10,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:47:10,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:47:10,475 INFO L87 Difference]: Start difference. First operand 39184 states and 45790 transitions. Second operand 4 states. [2021-02-21 21:47:25,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:47:25,332 INFO L93 Difference]: Finished difference Result 114148 states and 133474 transitions. [2021-02-21 21:47:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:47:25,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2021-02-21 21:47:25,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:47:25,434 INFO L225 Difference]: With dead ends: 114148 [2021-02-21 21:47:25,434 INFO L226 Difference]: Without dead ends: 77506 [2021-02-21 21:47:25,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:47:25,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77506 states. [2021-02-21 21:47:30,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77506 to 39224. [2021-02-21 21:47:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39224 states. [2021-02-21 21:47:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39224 states to 39224 states and 45830 transitions. [2021-02-21 21:47:30,567 INFO L78 Accepts]: Start accepts. Automaton has 39224 states and 45830 transitions. Word has length 478 [2021-02-21 21:47:30,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:47:30,568 INFO L480 AbstractCegarLoop]: Abstraction has 39224 states and 45830 transitions. [2021-02-21 21:47:30,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:47:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 39224 states and 45830 transitions. [2021-02-21 21:47:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-02-21 21:47:30,609 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:47:30,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:47:30,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 21:47:30,610 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:47:30,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:47:30,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1497536919, now seen corresponding path program 1 times [2021-02-21 21:47:30,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:47:30,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835757153] [2021-02-21 21:47:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:47:30,615 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:47:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:30,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:30,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:30,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:30,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:47:30,811 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-21 21:47:30,813 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-21 21:47:30,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:30,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:47:30,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:30,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:31,259 WARN L202 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-21 21:47:31,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:47:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:31,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:31,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:47:31,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835757153] [2021-02-21 21:47:31,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:47:31,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:47:31,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113177652] [2021-02-21 21:47:31,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:47:31,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:47:31,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:47:31,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:47:31,574 INFO L87 Difference]: Start difference. First operand 39224 states and 45830 transitions. Second operand 6 states. [2021-02-21 21:47:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:47:43,693 INFO L93 Difference]: Finished difference Result 80300 states and 93734 transitions. [2021-02-21 21:47:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:47:43,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 479 [2021-02-21 21:47:43,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:47:43,731 INFO L225 Difference]: With dead ends: 80300 [2021-02-21 21:47:43,731 INFO L226 Difference]: Without dead ends: 41726 [2021-02-21 21:47:43,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:47:43,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41726 states. [2021-02-21 21:47:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41726 to 40588. [2021-02-21 21:47:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40588 states. [2021-02-21 21:47:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40588 states to 40588 states and 47300 transitions. [2021-02-21 21:47:48,963 INFO L78 Accepts]: Start accepts. Automaton has 40588 states and 47300 transitions. Word has length 479 [2021-02-21 21:47:48,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:47:48,964 INFO L480 AbstractCegarLoop]: Abstraction has 40588 states and 47300 transitions. [2021-02-21 21:47:48,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:47:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 40588 states and 47300 transitions. [2021-02-21 21:47:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-02-21 21:47:48,999 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:47:49,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:47:49,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 21:47:49,000 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:47:49,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:47:49,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2063738556, now seen corresponding path program 1 times [2021-02-21 21:47:49,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:47:49,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687574797] [2021-02-21 21:47:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:47:49,005 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:47:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:47:49,068 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:47:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:47:49,137 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:47:49,728 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:47:49,728 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:47:49,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 21:47:49,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:47:49 BoogieIcfgContainer [2021-02-21 21:47:49,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:47:49,786 INFO L168 Benchmark]: Toolchain (without parser) took 142024.53 ms. Allocated memory was 151.0 MB in the beginning and 4.2 GB in the end (delta: 4.0 GB). Free memory was 125.7 MB in the beginning and 2.8 GB in the end (delta: -2.7 GB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2021-02-21 21:47:49,787 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:47:49,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1022.98 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 113.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:47:49,788 INFO L168 Benchmark]: Boogie Preprocessor took 159.48 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 108.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:47:49,788 INFO L168 Benchmark]: RCFGBuilder took 2094.95 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 108.4 MB in the beginning and 146.7 MB in the end (delta: -38.3 MB). Peak memory consumption was 75.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:47:49,788 INFO L168 Benchmark]: TraceAbstraction took 138725.90 ms. Allocated memory was 184.5 MB in the beginning and 4.2 GB in the end (delta: 4.0 GB). Free memory was 146.2 MB in the beginning and 2.8 GB in the end (delta: -2.7 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-02-21 21:47:49,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1022.98 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 113.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 159.48 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 108.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2094.95 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 108.4 MB in the beginning and 146.7 MB in the end (delta: -38.3 MB). Peak memory consumption was 75.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 138725.90 ms. Allocated memory was 184.5 MB in the beginning and 4.2 GB in the end (delta: 4.0 GB). Free memory was 146.2 MB in the beginning and 2.8 GB in the end (delta: -2.7 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 873]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] _Bool newmax1 = 0; [L49] char id2 = '\x0'; [L50] char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] _Bool newmax2 = 0; [L57] char id3 = '\x0'; [L58] char r3 = '\x0'; [L59] char st3 = '\x0'; [L60] char nl3 = '\x0'; [L61] char m3 = '\x0'; [L62] char max3 = '\x0'; [L63] _Bool mode3 = 0; [L64] _Bool newmax3 = 0; [L68] void (*nodes[3])() = { &node1, &node2, &node3 }; [L72] int __return_1863; [L73] int __return_2009; [L74] int __return_2142; [L75] int __return_2281; [L76] int __return_3069; [L77] int __return_3038; [L78] int __return_2975; [L79] int __return_2941; [L80] int __tmp_2420_0; [L81] int __return_2543; [L82] int __return_2433; [L83] int __return_2828; [L84] int __return_2794; [L85] int __return_2710; [L86] int __return_2419; [L89] int main__c1; [L90] int main__i2; [L91] main__c1 = 0 [L92] ep12 = __VERIFIER_nondet_bool() [L93] ep13 = __VERIFIER_nondet_bool() [L94] ep21 = __VERIFIER_nondet_bool() [L95] ep23 = __VERIFIER_nondet_bool() [L96] ep31 = __VERIFIER_nondet_bool() [L97] ep32 = __VERIFIER_nondet_bool() [L98] id1 = __VERIFIER_nondet_char() [L99] r1 = __VERIFIER_nondet_char() [L100] st1 = __VERIFIER_nondet_char() [L101] nl1 = __VERIFIER_nondet_char() [L102] m1 = __VERIFIER_nondet_char() [L103] max1 = __VERIFIER_nondet_char() [L104] mode1 = __VERIFIER_nondet_bool() [L105] newmax1 = __VERIFIER_nondet_bool() [L106] id2 = __VERIFIER_nondet_char() [L107] r2 = __VERIFIER_nondet_char() [L108] st2 = __VERIFIER_nondet_char() [L109] nl2 = __VERIFIER_nondet_char() [L110] m2 = __VERIFIER_nondet_char() [L111] max2 = __VERIFIER_nondet_char() [L112] mode2 = __VERIFIER_nondet_bool() [L113] newmax2 = __VERIFIER_nondet_bool() [L114] id3 = __VERIFIER_nondet_char() [L115] r3 = __VERIFIER_nondet_char() [L116] st3 = __VERIFIER_nondet_char() [L117] nl3 = __VERIFIER_nondet_char() [L118] m3 = __VERIFIER_nondet_char() [L119] max3 = __VERIFIER_nondet_char() [L120] mode3 = __VERIFIER_nondet_bool() [L121] newmax3 = __VERIFIER_nondet_bool() [L123] _Bool init__r121; [L124] _Bool init__r131; [L125] _Bool init__r211; [L126] _Bool init__r231; [L127] _Bool init__r311; [L128] _Bool init__r321; [L129] _Bool init__r122; [L130] int init__tmp; [L131] _Bool init__r132; [L132] int init__tmp___0; [L133] _Bool init__r212; [L134] int init__tmp___1; [L135] _Bool init__r232; [L136] int init__tmp___2; [L137] _Bool init__r312; [L138] int init__tmp___3; [L139] _Bool init__r322; [L140] int init__tmp___4; [L141] int init__tmp___5; [L142] init__r121 = ep12 [L143] init__r131 = ep13 [L144] init__r211 = ep21 [L145] init__r231 = ep23 [L146] init__r311 = ep31 [L147] init__r321 = ep32 [L148] COND FALSE !(!(init__r121 == 0)) [L3142] COND FALSE !(!(init__r131 == 0)) [L3158] init__tmp = 0 [L152] init__r122 = (_Bool)init__tmp [L153] COND FALSE !(!(init__r131 == 0)) [L3119] COND FALSE !(!(init__r121 == 0)) [L3135] init__tmp___0 = 0 [L157] init__r132 = (_Bool)init__tmp___0 [L158] COND FALSE !(!(init__r211 == 0)) [L3096] COND FALSE !(!(init__r231 == 0)) [L3112] init__tmp___1 = 0 [L162] init__r212 = (_Bool)init__tmp___1 [L163] COND FALSE !(!(init__r231 == 0)) [L3073] COND FALSE !(!(init__r211 == 0)) [L3089] init__tmp___2 = 0 [L167] init__r232 = (_Bool)init__tmp___2 [L168] COND FALSE !(!(init__r311 == 0)) [L3050] COND FALSE !(!(init__r321 == 0)) [L3066] init__tmp___3 = 0 [L172] init__r312 = (_Bool)init__tmp___3 [L173] COND FALSE !(!(init__r321 == 0)) [L3027] COND FALSE !(!(init__r311 == 0)) [L3043] init__tmp___4 = 0 [L177] init__r322 = (_Bool)init__tmp___4 [L178] COND TRUE ((int)id1) != ((int)id2) [L180] COND TRUE ((int)id1) != ((int)id3) [L182] COND TRUE ((int)id2) != ((int)id3) [L184] COND TRUE ((int)id1) >= 0 [L186] COND TRUE ((int)id2) >= 0 [L188] COND TRUE ((int)id3) >= 0 [L190] COND TRUE ((int)r1) == 0 [L192] COND TRUE ((int)r2) == 0 [L194] COND TRUE ((int)r3) == 0 [L196] COND TRUE ((int)max1) == ((int)id1) [L198] COND TRUE ((int)max2) == ((int)id2) [L200] COND TRUE ((int)max3) == ((int)id3) [L202] COND TRUE ((int)st1) == 0 [L204] COND TRUE ((int)st2) == 0 [L206] COND TRUE ((int)st3) == 0 [L208] COND TRUE ((int)nl1) == 0 [L210] COND TRUE ((int)nl2) == 0 [L212] COND TRUE ((int)nl3) == 0 [L214] COND TRUE ((int)mode1) == 0 [L216] COND TRUE ((int)mode2) == 0 [L218] COND TRUE ((int)mode3) == 0 [L220] COND TRUE !(newmax1 == 0) [L222] COND TRUE !(newmax2 == 0) [L224] COND TRUE !(newmax3 == 0) [L226] init__tmp___5 = 1 [L227] __return_1863 = init__tmp___5 [L228] main__i2 = __return_1863 [L229] COND TRUE main__i2 != 0 [L231] p12_old = nomsg [L232] p12_new = nomsg [L233] p13_old = nomsg [L234] p13_new = nomsg [L235] p21_old = nomsg [L236] p21_new = nomsg [L237] p23_old = nomsg [L238] p23_new = nomsg [L239] p31_old = nomsg [L240] p31_new = nomsg [L241] p32_old = nomsg [L242] p32_new = nomsg [L243] main__i2 = 0 [L244] COND TRUE main__i2 < 6 [L247] _Bool node1__newmax; [L248] node1__newmax = 0 [L249] COND FALSE !(!(mode1 == 0)) [L255] COND TRUE ((int)r1) < 2 [L257] COND FALSE !(!(ep12 == 0)) [L270] COND FALSE !(!(ep13 == 0)) [L283] mode1 = 1 [L285] _Bool node2__newmax; [L286] node2__newmax = 0 [L287] COND FALSE !(!(mode2 == 0)) [L293] COND TRUE ((int)r2) < 2 [L295] COND FALSE !(!(ep21 == 0)) [L308] COND FALSE !(!(ep23 == 0)) [L321] mode2 = 1 [L323] _Bool node3__newmax; [L324] node3__newmax = 0 [L325] COND FALSE !(!(mode3 == 0)) [L331] COND TRUE ((int)r3) < 2 [L333] COND FALSE !(!(ep31 == 0)) [L346] COND FALSE !(!(ep32 == 0)) [L359] mode3 = 1 [L360] p12_old = p12_new [L361] p12_new = nomsg [L362] p13_old = p13_new [L363] p13_new = nomsg [L364] p21_old = p21_new [L365] p21_new = nomsg [L366] p23_old = p23_new [L367] p23_new = nomsg [L368] p31_old = p31_new [L369] p31_new = nomsg [L370] p32_old = p32_new [L371] p32_new = nomsg [L373] int check__tmp; [L374] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L376] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L378] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L380] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L382] COND FALSE !(((int)r1) >= 2) [L388] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L390] COND TRUE ((int)r1) < 2 [L392] COND FALSE !(((int)r1) >= 2) [L398] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L400] COND TRUE ((int)r1) < 2 [L402] check__tmp = 1 [L403] __return_2009 = check__tmp [L404] main__c1 = __return_2009 [L406] _Bool __tmp_1; [L407] __tmp_1 = main__c1 [L408] _Bool assert__arg; [L409] assert__arg = __tmp_1 [L410] COND FALSE !(assert__arg == 0) [L416] int main____CPAchecker_TMP_0 = main__i2; [L417] main__i2 = main__i2 + 1 [L418] COND TRUE main__i2 < 6 [L421] _Bool node1__newmax; [L422] node1__newmax = 0 [L423] COND TRUE !(mode1 == 0) [L425] r1 = (char)(((int)r1) + 1) [L426] COND FALSE !(!(ep21 == 0)) [L435] COND FALSE !(!(ep31 == 0)) [L444] newmax1 = node1__newmax [L445] COND FALSE !(((int)r1) == 2) [L451] mode1 = 0 [L453] _Bool node2__newmax; [L454] node2__newmax = 0 [L455] COND TRUE !(mode2 == 0) [L457] r2 = (char)(((int)r2) + 1) [L458] COND FALSE !(!(ep12 == 0)) [L467] COND FALSE !(!(ep32 == 0)) [L476] newmax2 = node2__newmax [L477] COND FALSE !(((int)r2) == 2) [L483] mode2 = 0 [L485] _Bool node3__newmax; [L486] node3__newmax = 0 [L487] COND TRUE !(mode3 == 0) [L489] r3 = (char)(((int)r3) + 1) [L490] COND FALSE !(!(ep13 == 0)) [L499] COND FALSE !(!(ep23 == 0)) [L508] newmax3 = node3__newmax [L509] COND FALSE !(((int)r3) == 2) [L515] mode3 = 0 [L516] p12_old = p12_new [L517] p12_new = nomsg [L518] p13_old = p13_new [L519] p13_new = nomsg [L520] p21_old = p21_new [L521] p21_new = nomsg [L522] p23_old = p23_new [L523] p23_new = nomsg [L524] p31_old = p31_new [L525] p31_new = nomsg [L526] p32_old = p32_new [L527] p32_new = nomsg [L529] int check__tmp; [L530] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L532] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L534] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L536] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L538] COND FALSE !(((int)r1) >= 2) [L544] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L546] COND TRUE ((int)r1) < 2 [L548] COND FALSE !(((int)r1) >= 2) [L554] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L556] COND TRUE ((int)r1) < 2 [L558] check__tmp = 1 [L559] __return_2142 = check__tmp [L560] main__c1 = __return_2142 [L562] _Bool __tmp_2; [L563] __tmp_2 = main__c1 [L564] _Bool assert__arg; [L565] assert__arg = __tmp_2 [L566] COND FALSE !(assert__arg == 0) [L572] int main____CPAchecker_TMP_0 = main__i2; [L573] main__i2 = main__i2 + 1 [L574] COND TRUE main__i2 < 6 [L577] _Bool node1__newmax; [L578] node1__newmax = 0 [L579] COND FALSE !(!(mode1 == 0)) [L585] COND TRUE ((int)r1) < 2 [L587] COND FALSE !(!(ep12 == 0)) [L600] COND FALSE !(!(ep13 == 0)) [L613] mode1 = 1 [L615] _Bool node2__newmax; [L616] node2__newmax = 0 [L617] COND FALSE !(!(mode2 == 0)) [L623] COND TRUE ((int)r2) < 2 [L625] COND FALSE !(!(ep21 == 0)) [L638] COND FALSE !(!(ep23 == 0)) [L651] mode2 = 1 [L653] _Bool node3__newmax; [L654] node3__newmax = 0 [L655] COND FALSE !(!(mode3 == 0)) [L661] COND TRUE ((int)r3) < 2 [L663] COND FALSE !(!(ep31 == 0)) [L676] COND FALSE !(!(ep32 == 0)) [L689] mode3 = 1 [L690] p12_old = p12_new [L691] p12_new = nomsg [L692] p13_old = p13_new [L693] p13_new = nomsg [L694] p21_old = p21_new [L695] p21_new = nomsg [L696] p23_old = p23_new [L697] p23_new = nomsg [L698] p31_old = p31_new [L699] p31_new = nomsg [L700] p32_old = p32_new [L701] p32_new = nomsg [L703] int check__tmp; [L704] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L706] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L708] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L710] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L712] COND FALSE !(((int)r1) >= 2) [L718] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L720] COND TRUE ((int)r1) < 2 [L722] COND FALSE !(((int)r1) >= 2) [L728] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L730] COND TRUE ((int)r1) < 2 [L732] check__tmp = 1 [L733] __return_2281 = check__tmp [L734] main__c1 = __return_2281 [L736] _Bool __tmp_3; [L737] __tmp_3 = main__c1 [L738] _Bool assert__arg; [L739] assert__arg = __tmp_3 [L740] COND FALSE !(assert__arg == 0) [L746] int main____CPAchecker_TMP_0 = main__i2; [L747] main__i2 = main__i2 + 1 [L748] COND TRUE main__i2 < 6 [L751] _Bool node1__newmax; [L752] node1__newmax = 0 [L753] COND TRUE !(mode1 == 0) [L755] r1 = (char)(((int)r1) + 1) [L756] COND FALSE !(!(ep21 == 0)) [L765] COND FALSE !(!(ep31 == 0)) [L774] newmax1 = node1__newmax [L775] COND TRUE ((int)r1) == 2 [L777] COND TRUE ((int)max1) == ((int)id1) [L779] st1 = 1 [L780] mode1 = 0 [L782] _Bool node2__newmax; [L783] node2__newmax = 0 [L784] COND TRUE !(mode2 == 0) [L786] r2 = (char)(((int)r2) + 1) [L787] COND FALSE !(!(ep12 == 0)) [L796] COND FALSE !(!(ep32 == 0)) [L805] newmax2 = node2__newmax [L806] COND TRUE ((int)r2) == 2 [L808] COND TRUE ((int)max2) == ((int)id2) [L810] st2 = 1 [L811] mode2 = 0 [L813] _Bool node3__newmax; [L814] node3__newmax = 0 [L815] COND TRUE !(mode3 == 0) [L817] r3 = (char)(((int)r3) + 1) [L818] COND FALSE !(!(ep13 == 0)) [L827] COND FALSE !(!(ep23 == 0)) [L836] newmax3 = node3__newmax [L837] COND TRUE ((int)r3) == 2 [L839] COND TRUE ((int)max3) == ((int)id3) [L841] st3 = 1 [L842] mode3 = 0 [L843] p12_old = p12_new [L844] p12_new = nomsg [L845] p13_old = p13_new [L846] p13_new = nomsg [L847] p21_old = p21_new [L848] p21_new = nomsg [L849] p23_old = p23_new [L850] p23_new = nomsg [L851] p31_old = p31_new [L852] p31_new = nomsg [L853] p32_old = p32_new [L854] p32_new = nomsg [L856] int check__tmp; [L857] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L863] check__tmp = 0 [L864] __return_3069 = check__tmp [L865] main__c1 = __return_3069 [L867] _Bool __tmp_4; [L868] __tmp_4 = main__c1 [L869] _Bool assert__arg; [L870] assert__arg = __tmp_4 [L871] COND TRUE assert__arg == 0 [L873] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 1253 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 138.5s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 102.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24551 SDtfs, 20553 SDslu, 16776 SDs, 0 SdLazy, 25049 SolverSat, 148 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40588occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 23.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 53113 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...