/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-36cd7be [2021-02-23 19:15:44,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 19:15:44,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 19:15:44,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 19:15:44,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 19:15:44,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 19:15:44,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 19:15:44,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 19:15:44,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 19:15:44,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 19:15:44,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 19:15:44,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 19:15:44,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 19:15:44,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 19:15:44,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 19:15:44,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 19:15:44,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 19:15:44,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 19:15:44,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 19:15:44,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 19:15:44,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 19:15:44,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 19:15:44,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 19:15:44,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 19:15:44,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 19:15:44,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 19:15:44,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 19:15:44,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 19:15:44,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 19:15:44,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 19:15:44,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 19:15:44,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 19:15:44,482 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 19:15:44,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 19:15:44,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 19:15:44,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 19:15:44,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 19:15:44,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 19:15:44,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 19:15:44,483 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 19:15:44,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 19:15:44,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 19:15:44,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 19:15:44,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 19:15:44,485 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 19:15:44,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 19:15:44,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 19:15:44,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:15:44,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 19:15:44,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 19:15:44,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 19:15:44,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 19:15:45,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 19:15:45,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 19:15:45,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 19:15:45,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 19:15:45,077 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 19:15:45,078 INFO L432 ainManager$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 [2021-02-23 19:15:45,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3989ea856/bac365009a3e4a58b358dbbc127ad2d8/FLAGe6b16e2d8 [2021-02-23 19:15:46,150 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 19:15:46,160 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 [2021-02-23 19:15:46,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3989ea856/bac365009a3e4a58b358dbbc127ad2d8/FLAGe6b16e2d8 [2021-02-23 19:15:46,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3989ea856/bac365009a3e4a58b358dbbc127ad2d8 [2021-02-23 19:15:46,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 19:15:46,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 19:15:46,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 19:15:46,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 19:15:46,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 19:15:46,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:15:46" (1/1) ... [2021-02-23 19:15:46,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500838da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:46, skipping insertion in model container [2021-02-23 19:15:46,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:15:46" (1/1) ... [2021-02-23 19:15:46,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 19:15:46,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 19:15:47,086 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] [2021-02-23 19:15:47,107 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] [2021-02-23 19:15:47,134 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] [2021-02-23 19:15:47,158 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18089,18102] [2021-02-23 19:15:47,302 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] [2021-02-23 19:15:47,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:15:47,512 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 19:15:47,740 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] [2021-02-23 19:15:47,763 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] [2021-02-23 19:15:47,788 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] [2021-02-23 19:15:47,811 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18089,18102] [2021-02-23 19:15:47,953 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] [2021-02-23 19:15:48,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:15:48,042 INFO L208 MainTranslator]: Completed translation [2021-02-23 19:15:48,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:48 WrapperNode [2021-02-23 19:15:48,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 19:15:48,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 19:15:48,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 19:15:48,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 19:15:48,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:48" (1/1) ... [2021-02-23 19:15:48,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:48" (1/1) ... [2021-02-23 19:15:48,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:48" (1/1) ... [2021-02-23 19:15:48,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:48" (1/1) ... [2021-02-23 19:15:48,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:48" (1/1) ... [2021-02-23 19:15:48,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:48" (1/1) ... [2021-02-23 19:15:48,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:48" (1/1) ... [2021-02-23 19:15:48,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 19:15:48,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 19:15:48,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 19:15:48,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 19:15:48,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:15:48,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 19:15:48,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 19:15:48,479 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 19:15:48,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 19:15:48,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 19:15:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 19:15:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 19:15:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 19:15:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 19:15:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-23 19:15:48,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 19:15:48,484 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-23 19:15:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 19:15:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-23 19:15:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-23 19:15:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-23 19:15:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-23 19:15:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-23 19:15:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-23 19:15:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 19:15:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 19:15:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 19:15:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 19:15:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 19:15:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 19:15:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 19:15:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 19:15:51,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 19:15:51,213 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 19:15:51,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:15:51 BoogieIcfgContainer [2021-02-23 19:15:51,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 19:15:51,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 19:15:51,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 19:15:51,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 19:15:51,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:15:46" (1/3) ... [2021-02-23 19:15:51,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559a2aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:15:51, skipping insertion in model container [2021-02-23 19:15:51,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:15:48" (2/3) ... [2021-02-23 19:15:51,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559a2aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:15:51, skipping insertion in model container [2021-02-23 19:15:51,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:15:51" (3/3) ... [2021-02-23 19:15:51,236 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-02-23 19:15:51,250 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 19:15:51,261 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-02-23 19:15:51,297 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-02-23 19:15:51,338 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 19:15:51,339 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 19:15:51,339 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 19:15:51,339 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 19:15:51,339 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 19:15:51,339 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 19:15:51,340 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 19:15:51,340 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 19:15:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states. [2021-02-23 19:15:51,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-02-23 19:15:51,456 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:15:51,459 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] [2021-02-23 19:15:51,460 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:15:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:15:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1762420546, now seen corresponding path program 1 times [2021-02-23 19:15:51,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:15:51,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722099948] [2021-02-23 19:15:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:15:51,638 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:15:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:52,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:52,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:15:52,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:15:52,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:52,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:53,530 WARN L202 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:15:53,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:15:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:15:53,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:15:53,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:15:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:15:54,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722099948] [2021-02-23 19:15:54,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:15:54,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:15:54,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161891190] [2021-02-23 19:15:54,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:15:54,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:15:54,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:15:54,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:15:54,472 INFO L87 Difference]: Start difference. First operand 1245 states. Second operand 5 states. [2021-02-23 19:16:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:07,215 INFO L93 Difference]: Finished difference Result 3285 states and 4210 transitions. [2021-02-23 19:16:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 19:16:07,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 473 [2021-02-23 19:16:07,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:07,269 INFO L225 Difference]: With dead ends: 3285 [2021-02-23 19:16:07,270 INFO L226 Difference]: Without dead ends: 1968 [2021-02-23 19:16:07,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:16:07,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-02-23 19:16:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1841. [2021-02-23 19:16:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1841 states. [2021-02-23 19:16:07,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2177 transitions. [2021-02-23 19:16:07,626 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2177 transitions. Word has length 473 [2021-02-23 19:16:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:07,635 INFO L480 AbstractCegarLoop]: Abstraction has 1841 states and 2177 transitions. [2021-02-23 19:16:07,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:16:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2177 transitions. [2021-02-23 19:16:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-02-23 19:16:07,663 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:07,664 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] [2021-02-23 19:16:07,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 19:16:07,666 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:07,673 INFO L82 PathProgramCache]: Analyzing trace with hash -94039718, now seen corresponding path program 1 times [2021-02-23 19:16:07,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:07,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118385032] [2021-02-23 19:16:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:07,709 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:08,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:08,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:08,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:08,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:16:08,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:08,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:08,650 WARN L202 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:16:08,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:08,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:08,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:09,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118385032] [2021-02-23 19:16:09,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:09,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:16:09,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432952698] [2021-02-23 19:16:09,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:16:09,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:09,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:16:09,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:16:09,034 INFO L87 Difference]: Start difference. First operand 1841 states and 2177 transitions. Second operand 4 states. [2021-02-23 19:16:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:20,015 INFO L93 Difference]: Finished difference Result 5086 states and 6070 transitions. [2021-02-23 19:16:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:16:20,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 474 [2021-02-23 19:16:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:20,042 INFO L225 Difference]: With dead ends: 5086 [2021-02-23 19:16:20,042 INFO L226 Difference]: Without dead ends: 3479 [2021-02-23 19:16:20,051 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 [2021-02-23 19:16:20,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2021-02-23 19:16:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 1843. [2021-02-23 19:16:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2021-02-23 19:16:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2179 transitions. [2021-02-23 19:16:20,312 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2179 transitions. Word has length 474 [2021-02-23 19:16:20,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:20,315 INFO L480 AbstractCegarLoop]: Abstraction has 1843 states and 2179 transitions. [2021-02-23 19:16:20,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:16:20,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2179 transitions. [2021-02-23 19:16:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-02-23 19:16:20,342 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:20,343 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] [2021-02-23 19:16:20,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 19:16:20,344 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:20,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:20,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1648812603, now seen corresponding path program 1 times [2021-02-23 19:16:20,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:20,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876851341] [2021-02-23 19:16:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:20,355 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:20,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:20,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:20,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:20,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:16:20,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:20,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,210 WARN L202 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:16:21,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:21,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:21,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:21,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876851341] [2021-02-23 19:16:21,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:21,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:16:21,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841245915] [2021-02-23 19:16:21,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:16:21,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:21,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:16:21,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:16:21,681 INFO L87 Difference]: Start difference. First operand 1843 states and 2179 transitions. Second operand 4 states. [2021-02-23 19:16:31,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:31,820 INFO L93 Difference]: Finished difference Result 4776 states and 5680 transitions. [2021-02-23 19:16:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:16:31,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 475 [2021-02-23 19:16:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:31,844 INFO L225 Difference]: With dead ends: 4776 [2021-02-23 19:16:31,844 INFO L226 Difference]: Without dead ends: 3405 [2021-02-23 19:16:31,851 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 [2021-02-23 19:16:31,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2021-02-23 19:16:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3278. [2021-02-23 19:16:32,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3278 states. [2021-02-23 19:16:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 3906 transitions. [2021-02-23 19:16:32,220 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 3906 transitions. Word has length 475 [2021-02-23 19:16:32,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:32,222 INFO L480 AbstractCegarLoop]: Abstraction has 3278 states and 3906 transitions. [2021-02-23 19:16:32,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:16:32,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 3906 transitions. [2021-02-23 19:16:32,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-02-23 19:16:32,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:32,247 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] [2021-02-23 19:16:32,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 19:16:32,248 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:32,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:32,249 INFO L82 PathProgramCache]: Analyzing trace with hash 531411387, now seen corresponding path program 1 times [2021-02-23 19:16:32,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:32,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630554301] [2021-02-23 19:16:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:32,266 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:32,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:32,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:32,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:32,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:16:32,829 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 19:16:32,831 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 19:16:32,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:32,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:16:32,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:32,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:33,386 WARN L202 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:16:33,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:33,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:33,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:33,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630554301] [2021-02-23 19:16:33,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:33,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:16:33,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943433656] [2021-02-23 19:16:33,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:16:33,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:33,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:16:33,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:16:33,702 INFO L87 Difference]: Start difference. First operand 3278 states and 3906 transitions. Second operand 6 states. [2021-02-23 19:16:42,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:42,873 INFO L93 Difference]: Finished difference Result 8948 states and 10693 transitions. [2021-02-23 19:16:42,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:16:42,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 475 [2021-02-23 19:16:42,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:42,913 INFO L225 Difference]: With dead ends: 8948 [2021-02-23 19:16:42,913 INFO L226 Difference]: Without dead ends: 5875 [2021-02-23 19:16:42,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:16:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2021-02-23 19:16:43,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5760. [2021-02-23 19:16:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5760 states. [2021-02-23 19:16:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 6847 transitions. [2021-02-23 19:16:43,592 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 6847 transitions. Word has length 475 [2021-02-23 19:16:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:43,593 INFO L480 AbstractCegarLoop]: Abstraction has 5760 states and 6847 transitions. [2021-02-23 19:16:43,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:16:43,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 6847 transitions. [2021-02-23 19:16:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-02-23 19:16:43,614 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:43,615 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] [2021-02-23 19:16:43,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 19:16:43,616 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:43,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:43,622 INFO L82 PathProgramCache]: Analyzing trace with hash 392867480, now seen corresponding path program 1 times [2021-02-23 19:16:43,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:43,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458399846] [2021-02-23 19:16:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:43,630 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:44,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:44,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:44,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:44,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:16:44,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:44,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:16:44,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:44,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:44,532 WARN L202 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:16:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:44,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:44,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:44,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458399846] [2021-02-23 19:16:44,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:44,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:16:44,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655641435] [2021-02-23 19:16:44,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:16:44,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:44,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:16:44,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:16:44,824 INFO L87 Difference]: Start difference. First operand 5760 states and 6847 transitions. Second operand 5 states. [2021-02-23 19:16:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:16:54,327 INFO L93 Difference]: Finished difference Result 16451 states and 19566 transitions. [2021-02-23 19:16:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:16:54,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 475 [2021-02-23 19:16:54,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:16:54,394 INFO L225 Difference]: With dead ends: 16451 [2021-02-23 19:16:54,394 INFO L226 Difference]: Without dead ends: 10971 [2021-02-23 19:16:54,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:16:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states. [2021-02-23 19:16:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 10837. [2021-02-23 19:16:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10837 states. [2021-02-23 19:16:55,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10837 states to 10837 states and 12842 transitions. [2021-02-23 19:16:55,564 INFO L78 Accepts]: Start accepts. Automaton has 10837 states and 12842 transitions. Word has length 475 [2021-02-23 19:16:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:16:55,565 INFO L480 AbstractCegarLoop]: Abstraction has 10837 states and 12842 transitions. [2021-02-23 19:16:55,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:16:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 10837 states and 12842 transitions. [2021-02-23 19:16:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-02-23 19:16:55,597 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:16:55,597 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] [2021-02-23 19:16:55,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 19:16:55,598 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:16:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:16:55,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1326083860, now seen corresponding path program 1 times [2021-02-23 19:16:55,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:16:55,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752877026] [2021-02-23 19:16:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:16:55,605 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:16:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:55,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:55,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:55,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:55,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:16:55,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:55,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:56,290 WARN L202 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:16:56,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:16:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:16:56,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:16:56,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:16:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:16:56,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752877026] [2021-02-23 19:16:56,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:16:56,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:16:56,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891518272] [2021-02-23 19:16:56,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:16:56,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:16:56,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:16:56,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:16:56,636 INFO L87 Difference]: Start difference. First operand 10837 states and 12842 transitions. Second operand 4 states. [2021-02-23 19:17:07,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:17:07,819 INFO L93 Difference]: Finished difference Result 31886 states and 37820 transitions. [2021-02-23 19:17:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:17:07,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 476 [2021-02-23 19:17:07,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:17:07,912 INFO L225 Difference]: With dead ends: 31886 [2021-02-23 19:17:07,913 INFO L226 Difference]: Without dead ends: 21379 [2021-02-23 19:17:07,949 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 [2021-02-23 19:17:07,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21379 states. [2021-02-23 19:17:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21379 to 10847. [2021-02-23 19:17:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10847 states. [2021-02-23 19:17:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10847 states to 10847 states and 12852 transitions. [2021-02-23 19:17:09,439 INFO L78 Accepts]: Start accepts. Automaton has 10847 states and 12852 transitions. Word has length 476 [2021-02-23 19:17:09,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:17:09,439 INFO L480 AbstractCegarLoop]: Abstraction has 10847 states and 12852 transitions. [2021-02-23 19:17:09,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:17:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 10847 states and 12852 transitions. [2021-02-23 19:17:09,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-02-23 19:17:09,468 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:17:09,469 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] [2021-02-23 19:17:09,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 19:17:09,470 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:17:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:17:09,471 INFO L82 PathProgramCache]: Analyzing trace with hash -657574315, now seen corresponding path program 1 times [2021-02-23 19:17:09,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:17:09,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779213965] [2021-02-23 19:17:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:17:09,476 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:17:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:09,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:09,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:09,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:09,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:17:09,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:09,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:10,174 WARN L202 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:17:10,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:17:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:10,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:10,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:17:10,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779213965] [2021-02-23 19:17:10,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:17:10,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:17:10,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952176395] [2021-02-23 19:17:10,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:17:10,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:17:10,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:17:10,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:17:10,630 INFO L87 Difference]: Start difference. First operand 10847 states and 12852 transitions. Second operand 4 states. [2021-02-23 19:17:22,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:17:22,555 INFO L93 Difference]: Finished difference Result 30204 states and 35752 transitions. [2021-02-23 19:17:22,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:17:22,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 477 [2021-02-23 19:17:22,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:17:22,623 INFO L225 Difference]: With dead ends: 30204 [2021-02-23 19:17:22,624 INFO L226 Difference]: Without dead ends: 20866 [2021-02-23 19:17:22,659 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 [2021-02-23 19:17:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20866 states. [2021-02-23 19:17:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20866 to 20732. [2021-02-23 19:17:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20732 states. [2021-02-23 19:17:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20732 states to 20732 states and 24444 transitions. [2021-02-23 19:17:24,984 INFO L78 Accepts]: Start accepts. Automaton has 20732 states and 24444 transitions. Word has length 477 [2021-02-23 19:17:24,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:17:24,985 INFO L480 AbstractCegarLoop]: Abstraction has 20732 states and 24444 transitions. [2021-02-23 19:17:24,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:17:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand 20732 states and 24444 transitions. [2021-02-23 19:17:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-02-23 19:17:25,040 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:17:25,041 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] [2021-02-23 19:17:25,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 19:17:25,042 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:17:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:17:25,043 INFO L82 PathProgramCache]: Analyzing trace with hash -861559339, now seen corresponding path program 1 times [2021-02-23 19:17:25,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:17:25,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457339398] [2021-02-23 19:17:25,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:17:25,049 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:17:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:25,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:25,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:25,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:25,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:17:25,358 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 19:17:25,365 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 19:17:25,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:25,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:17:25,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:25,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:25,894 WARN L202 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:17:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:17:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:25,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:25,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:17:26,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457339398] [2021-02-23 19:17:26,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:17:26,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:17:26,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705504166] [2021-02-23 19:17:26,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:17:26,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:17:26,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:17:26,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:17:26,255 INFO L87 Difference]: Start difference. First operand 20732 states and 24444 transitions. Second operand 6 states. [2021-02-23 19:17:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:17:37,766 INFO L93 Difference]: Finished difference Result 59049 states and 69521 transitions. [2021-02-23 19:17:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:17:37,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 477 [2021-02-23 19:17:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:17:37,854 INFO L225 Difference]: With dead ends: 59049 [2021-02-23 19:17:37,855 INFO L226 Difference]: Without dead ends: 38623 [2021-02-23 19:17:37,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:17:37,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38623 states. [2021-02-23 19:17:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38623 to 38514. [2021-02-23 19:17:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38514 states. [2021-02-23 19:17:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38514 states to 38514 states and 45053 transitions. [2021-02-23 19:17:41,402 INFO L78 Accepts]: Start accepts. Automaton has 38514 states and 45053 transitions. Word has length 477 [2021-02-23 19:17:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:17:41,403 INFO L480 AbstractCegarLoop]: Abstraction has 38514 states and 45053 transitions. [2021-02-23 19:17:41,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:17:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 38514 states and 45053 transitions. [2021-02-23 19:17:41,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-02-23 19:17:41,445 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:17:41,446 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] [2021-02-23 19:17:41,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 19:17:41,446 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:17:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:17:41,447 INFO L82 PathProgramCache]: Analyzing trace with hash -279396838, now seen corresponding path program 1 times [2021-02-23 19:17:41,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:17:41,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719679136] [2021-02-23 19:17:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:17:41,451 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:17:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:41,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:41,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:41,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:41,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:17:41,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:41,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:17:41,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:41,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:42,022 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:17:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:17:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:42,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:42,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:17:42,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719679136] [2021-02-23 19:17:42,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:17:42,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:17:42,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663924508] [2021-02-23 19:17:42,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:17:42,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:17:42,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:17:42,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:17:42,401 INFO L87 Difference]: Start difference. First operand 38514 states and 45053 transitions. Second operand 5 states. [2021-02-23 19:17:53,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:17:53,322 INFO L93 Difference]: Finished difference Result 77670 states and 90824 transitions. [2021-02-23 19:17:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:17:53,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 477 [2021-02-23 19:17:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:17:53,382 INFO L225 Difference]: With dead ends: 77670 [2021-02-23 19:17:53,382 INFO L226 Difference]: Without dead ends: 39963 [2021-02-23 19:17:53,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:17:53,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39963 states. [2021-02-23 19:17:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39963 to 39184. [2021-02-23 19:17:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39184 states. [2021-02-23 19:17:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39184 states to 39184 states and 45790 transitions. [2021-02-23 19:17:57,544 INFO L78 Accepts]: Start accepts. Automaton has 39184 states and 45790 transitions. Word has length 477 [2021-02-23 19:17:57,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:17:57,545 INFO L480 AbstractCegarLoop]: Abstraction has 39184 states and 45790 transitions. [2021-02-23 19:17:57,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:17:57,545 INFO L276 IsEmpty]: Start isEmpty. Operand 39184 states and 45790 transitions. [2021-02-23 19:17:57,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2021-02-23 19:17:57,585 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:17:57,586 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] [2021-02-23 19:17:57,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 19:17:57,586 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:17:57,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:17:57,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1659376170, now seen corresponding path program 1 times [2021-02-23 19:17:57,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:17:57,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111450027] [2021-02-23 19:17:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:17:57,590 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:17:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:57,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:57,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:57,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:57,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:17:57,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:57,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:58,091 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:17:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:17:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:17:58,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:17:58,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:17:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:17:58,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111450027] [2021-02-23 19:17:58,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:17:58,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 19:17:58,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51172786] [2021-02-23 19:17:58,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 19:17:58,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:17:58,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 19:17:58,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 19:17:58,255 INFO L87 Difference]: Start difference. First operand 39184 states and 45790 transitions. Second operand 4 states. [2021-02-23 19:18:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:18:13,637 INFO L93 Difference]: Finished difference Result 114148 states and 133474 transitions. [2021-02-23 19:18:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 19:18:13,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2021-02-23 19:18:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:18:13,736 INFO L225 Difference]: With dead ends: 114148 [2021-02-23 19:18:13,736 INFO L226 Difference]: Without dead ends: 77506 [2021-02-23 19:18:13,787 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 [2021-02-23 19:18:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77506 states. [2021-02-23 19:18:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77506 to 39224. [2021-02-23 19:18:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39224 states. [2021-02-23 19:18:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39224 states to 39224 states and 45830 transitions. [2021-02-23 19:18:18,453 INFO L78 Accepts]: Start accepts. Automaton has 39224 states and 45830 transitions. Word has length 478 [2021-02-23 19:18:18,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:18:18,454 INFO L480 AbstractCegarLoop]: Abstraction has 39224 states and 45830 transitions. [2021-02-23 19:18:18,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 19:18:18,454 INFO L276 IsEmpty]: Start isEmpty. Operand 39224 states and 45830 transitions. [2021-02-23 19:18:18,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-02-23 19:18:18,486 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:18:18,487 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] [2021-02-23 19:18:18,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 19:18:18,487 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:18:18,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:18:18,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1497536919, now seen corresponding path program 1 times [2021-02-23 19:18:18,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:18:18,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771648151] [2021-02-23 19:18:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:18:18,491 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:18:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:18:18,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:18,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:18:18,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:18,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:18:18,668 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-23 19:18:18,669 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-23 19:18:18,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:18,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:18:18,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:18,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:18:19,102 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2021-02-23 19:18:19,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:18:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:18:19,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:18:19,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:18:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:18:19,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771648151] [2021-02-23 19:18:19,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:18:19,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:18:19,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181931243] [2021-02-23 19:18:19,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:18:19,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:18:19,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:18:19,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:18:19,466 INFO L87 Difference]: Start difference. First operand 39224 states and 45830 transitions. Second operand 6 states. [2021-02-23 19:18:31,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:18:31,229 INFO L93 Difference]: Finished difference Result 80300 states and 93734 transitions. [2021-02-23 19:18:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:18:31,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 479 [2021-02-23 19:18:31,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:18:31,270 INFO L225 Difference]: With dead ends: 80300 [2021-02-23 19:18:31,270 INFO L226 Difference]: Without dead ends: 41726 [2021-02-23 19:18:31,305 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 [2021-02-23 19:18:31,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41726 states. [2021-02-23 19:18:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41726 to 40588. [2021-02-23 19:18:36,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40588 states. [2021-02-23 19:18:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40588 states to 40588 states and 47300 transitions. [2021-02-23 19:18:36,059 INFO L78 Accepts]: Start accepts. Automaton has 40588 states and 47300 transitions. Word has length 479 [2021-02-23 19:18:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:18:36,060 INFO L480 AbstractCegarLoop]: Abstraction has 40588 states and 47300 transitions. [2021-02-23 19:18:36,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:18:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 40588 states and 47300 transitions. [2021-02-23 19:18:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-02-23 19:18:36,094 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:18:36,095 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] [2021-02-23 19:18:36,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 19:18:36,095 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:18:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:18:36,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2063738556, now seen corresponding path program 1 times [2021-02-23 19:18:36,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:18:36,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435923491] [2021-02-23 19:18:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:18:36,099 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:18:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:18:36,175 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:18:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:18:36,259 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:18:37,045 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 19:18:37,045 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 19:18:37,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 19:18:37,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:18:37 BoogieIcfgContainer [2021-02-23 19:18:37,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 19:18:37,105 INFO L168 Benchmark]: Toolchain (without parser) took 170769.35 ms. Allocated memory was 151.0 MB in the beginning and 4.3 GB in the end (delta: 4.1 GB). Free memory was 126.3 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.8 GB. Max. memory is 8.0 GB. [2021-02-23 19:18:37,106 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 19:18:37,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1686.62 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 114.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. [2021-02-23 19:18:37,106 INFO L168 Benchmark]: Boogie Preprocessor took 220.05 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 109.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-23 19:18:37,107 INFO L168 Benchmark]: RCFGBuilder took 2954.85 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 109.8 MB in the beginning and 141.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 75.6 MB. Max. memory is 8.0 GB. [2021-02-23 19:18:37,108 INFO L168 Benchmark]: TraceAbstraction took 165880.21 ms. Allocated memory was 181.4 MB in the beginning and 4.3 GB in the end (delta: 4.1 GB). Free memory was 141.3 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. [2021-02-23 19:18:37,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1686.62 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 114.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 220.05 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 109.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2954.85 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 109.8 MB in the beginning and 141.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 75.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 165880.21 ms. Allocated memory was 181.4 MB in the beginning and 4.3 GB in the end (delta: 4.1 GB). Free memory was 141.3 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.7 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: 165.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 126.2s, 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, 74.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.5s 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: 23.5s 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...