/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_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:43:52,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:43:52,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:43:52,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:43:52,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:43:52,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:43:52,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:43:52,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:43:52,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:43:52,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:43:52,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:43:52,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:43:52,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:43:52,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:43:52,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:43:52,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:43:52,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:43:52,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:43:52,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:43:52,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:43:52,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:43:52,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:43:52,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:43:52,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:43:52,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:43:52,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:43:52,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:43:52,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:43:52,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:43:52,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:43:52,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:43:52,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:43:52,652 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:43:52,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:43:52,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:43:52,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:43:52,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:43:52,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:43:52,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:43:52,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:43:52,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:43:52,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:43:52,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:43:52,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:43:52,656 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:43:52,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:43:52,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:43:52,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:43:52,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:43:52,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:43:52,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:43:52,657 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:43:53,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:43:53,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:43:53,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:43:53,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:43:53,156 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:43:53,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-21 21:43:53,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4f2d28e/2fe42bbf7197455ba8a544bbdb71dcaa/FLAG9c178f589 [2021-02-21 21:43:54,374 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:43:54,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-21 21:43:54,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4f2d28e/2fe42bbf7197455ba8a544bbdb71dcaa/FLAG9c178f589 [2021-02-21 21:43:54,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4f2d28e/2fe42bbf7197455ba8a544bbdb71dcaa [2021-02-21 21:43:54,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:43:54,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:43:54,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:43:54,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:43:54,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:43:54,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:43:54" (1/1) ... [2021-02-21 21:43:54,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244f0e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:54, skipping insertion in model container [2021-02-21 21:43:54,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:43:54" (1/1) ... [2021-02-21 21:43:54,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:43:54,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:43:55,112 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_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[13949,13962] [2021-02-21 21:43:55,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:43:55,390 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:43:55,656 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_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[13949,13962] [2021-02-21 21:43:55,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:43:55,808 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:43:55,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:55 WrapperNode [2021-02-21 21:43:55,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:43:55,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:43:55,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:43:55,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:43:55,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:55" (1/1) ... [2021-02-21 21:43:55,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:55" (1/1) ... [2021-02-21 21:43:55,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:55" (1/1) ... [2021-02-21 21:43:55,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:55" (1/1) ... [2021-02-21 21:43:55,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:55" (1/1) ... [2021-02-21 21:43:55,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:55" (1/1) ... [2021-02-21 21:43:55,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:55" (1/1) ... [2021-02-21 21:43:56,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:43:56,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:43:56,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:43:56,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:43:56,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:43:56,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:43:56,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:43:56,153 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:43:56,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:43:56,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:43:56,154 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:43:56,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:43:56,154 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:43:56,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:43:56,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-21 21:43:56,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-21 21:43:56,155 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-21 21:43:56,155 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:43:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-21 21:43:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-21 21:43:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-21 21:43:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-21 21:43:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-21 21:43:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-21 21:43:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-21 21:43:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:43:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:43:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:43:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:43:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:43:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:43:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:43:58,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:43:58,093 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 21:43:58,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:43:58 BoogieIcfgContainer [2021-02-21 21:43:58,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:43:58,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:43:58,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:43:58,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:43:58,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:43:54" (1/3) ... [2021-02-21 21:43:58,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427a6a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:43:58, skipping insertion in model container [2021-02-21 21:43:58,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:43:55" (2/3) ... [2021-02-21 21:43:58,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427a6a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:43:58, skipping insertion in model container [2021-02-21 21:43:58,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:43:58" (3/3) ... [2021-02-21 21:43:58,110 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-21 21:43:58,119 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:43:58,128 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:43:58,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:43:58,189 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:43:58,190 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:43:58,190 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:43:58,190 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:43:58,190 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:43:58,191 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:43:58,191 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:43:58,191 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:43:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states. [2021-02-21 21:43:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-21 21:43:58,277 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:43:58,279 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] [2021-02-21 21:43:58,280 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:43:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:43:58,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2110658267, now seen corresponding path program 1 times [2021-02-21 21:43:58,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:43:58,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811365827] [2021-02-21 21:43:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:43:58,429 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:43:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:59,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:59,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:59,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:59,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:43:59,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:59,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:59,814 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 21:43:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:59,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:59,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:00,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811365827] [2021-02-21 21:44:00,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:00,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:44:00,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340214057] [2021-02-21 21:44:00,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:44:00,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:00,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:44:00,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:00,287 INFO L87 Difference]: Start difference. First operand 830 states. Second operand 4 states. [2021-02-21 21:44:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:04,326 INFO L93 Difference]: Finished difference Result 1496 states and 1956 transitions. [2021-02-21 21:44:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:44:04,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2021-02-21 21:44:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:04,424 INFO L225 Difference]: With dead ends: 1496 [2021-02-21 21:44:04,424 INFO L226 Difference]: Without dead ends: 1117 [2021-02-21 21:44:04,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:04,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2021-02-21 21:44:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1110. [2021-02-21 21:44:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2021-02-21 21:44:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1353 transitions. [2021-02-21 21:44:04,666 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1353 transitions. Word has length 426 [2021-02-21 21:44:04,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:04,668 INFO L480 AbstractCegarLoop]: Abstraction has 1110 states and 1353 transitions. [2021-02-21 21:44:04,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:44:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1353 transitions. [2021-02-21 21:44:04,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-21 21:44:04,679 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:04,679 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] [2021-02-21 21:44:04,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:44:04,680 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:04,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash 880913755, now seen corresponding path program 1 times [2021-02-21 21:44:04,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:04,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042239524] [2021-02-21 21:44:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:04,691 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:05,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:05,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:05,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:05,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:05,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:05,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:05,669 WARN L202 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 21:44:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:05,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:05,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:06,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042239524] [2021-02-21 21:44:06,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:06,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:44:06,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214517484] [2021-02-21 21:44:06,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:44:06,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:06,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:44:06,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:06,099 INFO L87 Difference]: Start difference. First operand 1110 states and 1353 transitions. Second operand 4 states. [2021-02-21 21:44:09,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:09,300 INFO L93 Difference]: Finished difference Result 2230 states and 2800 transitions. [2021-02-21 21:44:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:44:09,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2021-02-21 21:44:09,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:09,318 INFO L225 Difference]: With dead ends: 2230 [2021-02-21 21:44:09,318 INFO L226 Difference]: Without dead ends: 1836 [2021-02-21 21:44:09,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-02-21 21:44:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1824. [2021-02-21 21:44:09,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1824 states. [2021-02-21 21:44:09,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2261 transitions. [2021-02-21 21:44:09,461 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2261 transitions. Word has length 426 [2021-02-21 21:44:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:09,468 INFO L480 AbstractCegarLoop]: Abstraction has 1824 states and 2261 transitions. [2021-02-21 21:44:09,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:44:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2261 transitions. [2021-02-21 21:44:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-21 21:44:09,484 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:09,484 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] [2021-02-21 21:44:09,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:44:09,486 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:09,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:09,487 INFO L82 PathProgramCache]: Analyzing trace with hash 233982427, now seen corresponding path program 1 times [2021-02-21 21:44:09,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:09,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257873705] [2021-02-21 21:44:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:09,492 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:09,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:09,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:09,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:09,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:09,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:09,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:10,114 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 21:44:10,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:10,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:10,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:10,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257873705] [2021-02-21 21:44:10,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:10,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:44:10,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849068028] [2021-02-21 21:44:10,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:44:10,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:10,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:44:10,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:10,434 INFO L87 Difference]: Start difference. First operand 1824 states and 2261 transitions. Second operand 4 states. [2021-02-21 21:44:13,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:13,661 INFO L93 Difference]: Finished difference Result 3912 states and 4963 transitions. [2021-02-21 21:44:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:44:13,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2021-02-21 21:44:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:13,685 INFO L225 Difference]: With dead ends: 3912 [2021-02-21 21:44:13,686 INFO L226 Difference]: Without dead ends: 3202 [2021-02-21 21:44:13,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:13,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2021-02-21 21:44:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 3180. [2021-02-21 21:44:13,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3180 states. [2021-02-21 21:44:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 3985 transitions. [2021-02-21 21:44:13,957 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 3985 transitions. Word has length 426 [2021-02-21 21:44:13,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:13,959 INFO L480 AbstractCegarLoop]: Abstraction has 3180 states and 3985 transitions. [2021-02-21 21:44:13,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:44:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 3985 transitions. [2021-02-21 21:44:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-21 21:44:13,981 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:13,982 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] [2021-02-21 21:44:13,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:44:13,982 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:13,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:13,984 INFO L82 PathProgramCache]: Analyzing trace with hash 342617179, now seen corresponding path program 1 times [2021-02-21 21:44:13,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:13,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813682378] [2021-02-21 21:44:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:13,994 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:14,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:14,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:14,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:14,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:14,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:14,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:44:14,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:14,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:14,809 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 21:44:14,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:14,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:14,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:15,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813682378] [2021-02-21 21:44:15,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:15,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:44:15,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869524642] [2021-02-21 21:44:15,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:44:15,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:15,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:44:15,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:44:15,208 INFO L87 Difference]: Start difference. First operand 3180 states and 3985 transitions. Second operand 5 states. [2021-02-21 21:44:21,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:21,177 INFO L93 Difference]: Finished difference Result 8999 states and 11348 transitions. [2021-02-21 21:44:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:44:21,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 426 [2021-02-21 21:44:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:21,218 INFO L225 Difference]: With dead ends: 8999 [2021-02-21 21:44:21,219 INFO L226 Difference]: Without dead ends: 6003 [2021-02-21 21:44:21,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:44:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6003 states. [2021-02-21 21:44:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6003 to 6001. [2021-02-21 21:44:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6001 states. [2021-02-21 21:44:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6001 states to 6001 states and 7515 transitions. [2021-02-21 21:44:21,762 INFO L78 Accepts]: Start accepts. Automaton has 6001 states and 7515 transitions. Word has length 426 [2021-02-21 21:44:21,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:21,762 INFO L480 AbstractCegarLoop]: Abstraction has 6001 states and 7515 transitions. [2021-02-21 21:44:21,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:44:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6001 states and 7515 transitions. [2021-02-21 21:44:21,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-02-21 21:44:21,777 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:21,777 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] [2021-02-21 21:44:21,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:44:21,778 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash 2100174259, now seen corresponding path program 1 times [2021-02-21 21:44:21,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:21,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938697806] [2021-02-21 21:44:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:21,784 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:21,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:21,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:21,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:21,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:44:21,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:21,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:22,181 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 21:44:22,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:22,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:22,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:22,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938697806] [2021-02-21 21:44:22,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:22,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:44:22,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742300534] [2021-02-21 21:44:22,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:44:22,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:22,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:44:22,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:22,371 INFO L87 Difference]: Start difference. First operand 6001 states and 7515 transitions. Second operand 4 states. [2021-02-21 21:44:26,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:26,618 INFO L93 Difference]: Finished difference Result 17598 states and 22116 transitions. [2021-02-21 21:44:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:44:26,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2021-02-21 21:44:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:26,692 INFO L225 Difference]: With dead ends: 17598 [2021-02-21 21:44:26,692 INFO L226 Difference]: Without dead ends: 11815 [2021-02-21 21:44:26,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11815 states. [2021-02-21 21:44:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11815 to 6003. [2021-02-21 21:44:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6003 states. [2021-02-21 21:44:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 7517 transitions. [2021-02-21 21:44:27,358 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 7517 transitions. Word has length 427 [2021-02-21 21:44:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:27,359 INFO L480 AbstractCegarLoop]: Abstraction has 6003 states and 7517 transitions. [2021-02-21 21:44:27,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:44:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 7517 transitions. [2021-02-21 21:44:27,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-02-21 21:44:27,374 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:27,375 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] [2021-02-21 21:44:27,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:44:27,375 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:27,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:27,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1185160965, now seen corresponding path program 1 times [2021-02-21 21:44:27,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:27,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647624541] [2021-02-21 21:44:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:27,386 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:27,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:27,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:27,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:27,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:27,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:27,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:44:27,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:27,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:28,053 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 21:44:28,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:28,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:28,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:28,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647624541] [2021-02-21 21:44:28,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:28,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:44:28,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976205996] [2021-02-21 21:44:28,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:44:28,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:28,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:44:28,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:44:28,268 INFO L87 Difference]: Start difference. First operand 6003 states and 7517 transitions. Second operand 5 states. [2021-02-21 21:44:33,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:33,638 INFO L93 Difference]: Finished difference Result 17237 states and 21639 transitions. [2021-02-21 21:44:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:44:33,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 428 [2021-02-21 21:44:33,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:33,705 INFO L225 Difference]: With dead ends: 17237 [2021-02-21 21:44:33,705 INFO L226 Difference]: Without dead ends: 11455 [2021-02-21 21:44:33,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:44:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11455 states. [2021-02-21 21:44:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11455 to 11453. [2021-02-21 21:44:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11453 states. [2021-02-21 21:44:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 14289 transitions. [2021-02-21 21:44:35,125 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 14289 transitions. Word has length 428 [2021-02-21 21:44:35,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:35,126 INFO L480 AbstractCegarLoop]: Abstraction has 11453 states and 14289 transitions. [2021-02-21 21:44:35,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:44:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 14289 transitions. [2021-02-21 21:44:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-02-21 21:44:35,155 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:35,156 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] [2021-02-21 21:44:35,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:44:35,157 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:35,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:35,158 INFO L82 PathProgramCache]: Analyzing trace with hash -413134307, now seen corresponding path program 1 times [2021-02-21 21:44:35,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:35,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99160330] [2021-02-21 21:44:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:35,163 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:35,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:35,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:35,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:35,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:44:35,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:35,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:35,656 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 21:44:35,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:35,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:35,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:35,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99160330] [2021-02-21 21:44:35,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:35,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:44:35,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118036554] [2021-02-21 21:44:35,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:44:35,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:35,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:44:35,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:35,900 INFO L87 Difference]: Start difference. First operand 11453 states and 14289 transitions. Second operand 4 states. [2021-02-21 21:44:40,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:40,728 INFO L93 Difference]: Finished difference Result 33891 states and 42355 transitions. [2021-02-21 21:44:40,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:44:40,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 429 [2021-02-21 21:44:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:40,806 INFO L225 Difference]: With dead ends: 33891 [2021-02-21 21:44:40,807 INFO L226 Difference]: Without dead ends: 22679 [2021-02-21 21:44:40,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:40,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22679 states. [2021-02-21 21:44:42,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22679 to 11457. [2021-02-21 21:44:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11457 states. [2021-02-21 21:44:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11457 states to 11457 states and 14293 transitions. [2021-02-21 21:44:42,153 INFO L78 Accepts]: Start accepts. Automaton has 11457 states and 14293 transitions. Word has length 429 [2021-02-21 21:44:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:42,153 INFO L480 AbstractCegarLoop]: Abstraction has 11457 states and 14293 transitions. [2021-02-21 21:44:42,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:44:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 11457 states and 14293 transitions. [2021-02-21 21:44:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2021-02-21 21:44:42,186 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:42,187 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] [2021-02-21 21:44:42,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:44:42,187 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:42,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1682431751, now seen corresponding path program 1 times [2021-02-21 21:44:42,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:42,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760105609] [2021-02-21 21:44:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:42,194 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:42,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:42,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:42,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:42,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:42,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:42,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:44:42,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:42,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:42,758 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 21:44:42,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:42,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:42,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:43,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760105609] [2021-02-21 21:44:43,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:43,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:44:43,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838596140] [2021-02-21 21:44:43,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:44:43,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:43,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:44:43,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:44:43,042 INFO L87 Difference]: Start difference. First operand 11457 states and 14293 transitions. Second operand 5 states. [2021-02-21 21:44:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:49,405 INFO L93 Difference]: Finished difference Result 30787 states and 38409 transitions. [2021-02-21 21:44:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:44:49,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 430 [2021-02-21 21:44:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:49,469 INFO L225 Difference]: With dead ends: 30787 [2021-02-21 21:44:49,469 INFO L226 Difference]: Without dead ends: 19577 [2021-02-21 21:44:49,507 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 [2021-02-21 21:44:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19577 states. [2021-02-21 21:44:51,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19577 to 19575. [2021-02-21 21:44:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19575 states. [2021-02-21 21:44:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19575 states to 19575 states and 24241 transitions. [2021-02-21 21:44:51,399 INFO L78 Accepts]: Start accepts. Automaton has 19575 states and 24241 transitions. Word has length 430 [2021-02-21 21:44:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:51,400 INFO L480 AbstractCegarLoop]: Abstraction has 19575 states and 24241 transitions. [2021-02-21 21:44:51,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:44:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 19575 states and 24241 transitions. [2021-02-21 21:44:51,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-21 21:44:51,433 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:51,433 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] [2021-02-21 21:44:51,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:44:51,434 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:51,435 INFO L82 PathProgramCache]: Analyzing trace with hash 776839727, now seen corresponding path program 1 times [2021-02-21 21:44:51,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:51,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288026288] [2021-02-21 21:44:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:51,440 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:51,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:51,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:51,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:51,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:44:51,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:51,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:51,876 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 21:44:51,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:51,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:51,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:52,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288026288] [2021-02-21 21:44:52,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:52,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:44:52,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20292201] [2021-02-21 21:44:52,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:44:52,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:52,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:44:52,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:52,062 INFO L87 Difference]: Start difference. First operand 19575 states and 24241 transitions. Second operand 4 states. [2021-02-21 21:44:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:58,803 INFO L93 Difference]: Finished difference Result 57791 states and 71655 transitions. [2021-02-21 21:44:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:44:58,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2021-02-21 21:44:58,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:58,933 INFO L225 Difference]: With dead ends: 57791 [2021-02-21 21:44:58,934 INFO L226 Difference]: Without dead ends: 38827 [2021-02-21 21:44:58,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:44:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38827 states. [2021-02-21 21:45:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38827 to 19583. [2021-02-21 21:45:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19583 states. [2021-02-21 21:45:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19583 states to 19583 states and 24249 transitions. [2021-02-21 21:45:01,609 INFO L78 Accepts]: Start accepts. Automaton has 19583 states and 24249 transitions. Word has length 431 [2021-02-21 21:45:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:45:01,609 INFO L480 AbstractCegarLoop]: Abstraction has 19583 states and 24249 transitions. [2021-02-21 21:45:01,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:45:01,609 INFO L276 IsEmpty]: Start isEmpty. Operand 19583 states and 24249 transitions. [2021-02-21 21:45:01,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-02-21 21:45:01,637 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:45:01,638 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] [2021-02-21 21:45:01,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 21:45:01,638 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:45:01,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:45:01,639 INFO L82 PathProgramCache]: Analyzing trace with hash -33613215, now seen corresponding path program 1 times [2021-02-21 21:45:01,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:45:01,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504779225] [2021-02-21 21:45:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:45:01,645 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:45:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:45:01,737 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:45:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:45:01,823 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:45:02,750 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:45:02,751 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:45:02,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 21:45:02,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:45:02 BoogieIcfgContainer [2021-02-21 21:45:02,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:45:02,822 INFO L168 Benchmark]: Toolchain (without parser) took 68389.37 ms. Allocated memory was 158.3 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 133.6 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 690.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:45:02,822 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 158.3 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:45:02,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1362.46 ms. Allocated memory is still 158.3 MB. Free memory was 132.5 MB in the beginning and 134.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:45:02,824 INFO L168 Benchmark]: Boogie Preprocessor took 196.54 ms. Allocated memory is still 158.3 MB. Free memory was 134.2 MB in the beginning and 130.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:45:02,824 INFO L168 Benchmark]: RCFGBuilder took 2083.91 ms. Allocated memory was 158.3 MB in the beginning and 198.2 MB in the end (delta: 39.8 MB). Free memory was 130.0 MB in the beginning and 142.4 MB in the end (delta: -12.3 MB). Peak memory consumption was 75.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:45:02,825 INFO L168 Benchmark]: TraceAbstraction took 64720.10 ms. Allocated memory was 198.2 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 141.8 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 658.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:45:02,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 158.3 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1362.46 ms. Allocated memory is still 158.3 MB. Free memory was 132.5 MB in the beginning and 134.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 196.54 ms. Allocated memory is still 158.3 MB. Free memory was 134.2 MB in the beginning and 130.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2083.91 ms. Allocated memory was 158.3 MB in the beginning and 198.2 MB in the end (delta: 39.8 MB). Free memory was 130.0 MB in the beginning and 142.4 MB in the end (delta: -12.3 MB). Peak memory consumption was 75.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 64720.10 ms. Allocated memory was 198.2 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 141.8 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 658.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 815]: 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] char id2 = '\x0'; [L49] char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L65] void (*nodes[3])() = { &node1, &node2, &node3 }; [L69] int __return_1708; [L70] int __return_1836; [L71] int __return_1954; [L72] int __return_2075; [L73] int __return_2198; [L74] int __tmp_2199_0; [L75] int __return_2307; [L76] int __return_2212; [L79] int main__c1; [L80] int main__i2; [L81] main__c1 = 0 [L82] ep12 = __VERIFIER_nondet_bool() [L83] ep13 = __VERIFIER_nondet_bool() [L84] ep21 = __VERIFIER_nondet_bool() [L85] ep23 = __VERIFIER_nondet_bool() [L86] ep31 = __VERIFIER_nondet_bool() [L87] ep32 = __VERIFIER_nondet_bool() [L88] id1 = __VERIFIER_nondet_char() [L89] r1 = __VERIFIER_nondet_char() [L90] st1 = __VERIFIER_nondet_char() [L91] nl1 = __VERIFIER_nondet_char() [L92] m1 = __VERIFIER_nondet_char() [L93] max1 = __VERIFIER_nondet_char() [L94] mode1 = __VERIFIER_nondet_bool() [L95] id2 = __VERIFIER_nondet_char() [L96] r2 = __VERIFIER_nondet_char() [L97] st2 = __VERIFIER_nondet_char() [L98] nl2 = __VERIFIER_nondet_char() [L99] m2 = __VERIFIER_nondet_char() [L100] max2 = __VERIFIER_nondet_char() [L101] mode2 = __VERIFIER_nondet_bool() [L102] id3 = __VERIFIER_nondet_char() [L103] r3 = __VERIFIER_nondet_char() [L104] st3 = __VERIFIER_nondet_char() [L105] nl3 = __VERIFIER_nondet_char() [L106] m3 = __VERIFIER_nondet_char() [L107] max3 = __VERIFIER_nondet_char() [L108] mode3 = __VERIFIER_nondet_bool() [L110] _Bool init__r121; [L111] _Bool init__r131; [L112] _Bool init__r211; [L113] _Bool init__r231; [L114] _Bool init__r311; [L115] _Bool init__r321; [L116] _Bool init__r122; [L117] int init__tmp; [L118] _Bool init__r132; [L119] int init__tmp___0; [L120] _Bool init__r212; [L121] int init__tmp___1; [L122] _Bool init__r232; [L123] int init__tmp___2; [L124] _Bool init__r312; [L125] int init__tmp___3; [L126] _Bool init__r322; [L127] int init__tmp___4; [L128] int init__tmp___5; [L129] init__r121 = ep12 [L130] init__r131 = ep13 [L131] init__r211 = ep21 [L132] init__r231 = ep23 [L133] init__r311 = ep31 [L134] init__r321 = ep32 [L135] COND FALSE !(!(init__r121 == 0)) [L2225] COND FALSE !(!(init__r131 == 0)) [L2241] init__tmp = 0 [L139] init__r122 = (_Bool)init__tmp [L140] COND FALSE !(!(init__r131 == 0)) [L2202] COND FALSE !(!(init__r121 == 0)) [L2218] init__tmp___0 = 0 [L144] init__r132 = (_Bool)init__tmp___0 [L145] COND FALSE !(!(init__r211 == 0)) [L2179] COND FALSE !(!(init__r231 == 0)) [L2195] init__tmp___1 = 0 [L149] init__r212 = (_Bool)init__tmp___1 [L150] COND FALSE !(!(init__r231 == 0)) [L2156] COND FALSE !(!(init__r211 == 0)) [L2172] init__tmp___2 = 0 [L154] init__r232 = (_Bool)init__tmp___2 [L155] COND FALSE !(!(init__r311 == 0)) [L2133] COND FALSE !(!(init__r321 == 0)) [L2149] init__tmp___3 = 0 [L159] init__r312 = (_Bool)init__tmp___3 [L160] COND FALSE !(!(init__r321 == 0)) [L2110] COND FALSE !(!(init__r311 == 0)) [L2126] init__tmp___4 = 0 [L164] init__r322 = (_Bool)init__tmp___4 [L165] COND TRUE ((int)id1) != ((int)id2) [L167] COND TRUE ((int)id1) != ((int)id3) [L169] COND TRUE ((int)id2) != ((int)id3) [L171] COND TRUE ((int)id1) >= 0 [L173] COND TRUE ((int)id2) >= 0 [L175] COND TRUE ((int)id3) >= 0 [L177] COND TRUE ((int)r1) == 0 [L179] COND TRUE ((int)r2) == 0 [L181] COND TRUE ((int)r3) == 0 [L183] COND TRUE ((int)max1) == ((int)id1) [L185] COND TRUE ((int)max2) == ((int)id2) [L187] COND TRUE ((int)max3) == ((int)id3) [L189] COND TRUE ((int)st1) == 0 [L191] COND TRUE ((int)st2) == 0 [L193] COND TRUE ((int)st3) == 0 [L195] COND TRUE ((int)nl1) == 0 [L197] COND TRUE ((int)nl2) == 0 [L199] COND TRUE ((int)nl3) == 0 [L201] COND TRUE ((int)mode1) == 0 [L203] COND TRUE ((int)mode2) == 0 [L205] COND TRUE ((int)mode3) == 0 [L207] init__tmp___5 = 1 [L208] __return_1708 = init__tmp___5 [L209] main__i2 = __return_1708 [L210] COND TRUE main__i2 != 0 [L212] p12_old = nomsg [L213] p12_new = nomsg [L214] p13_old = nomsg [L215] p13_new = nomsg [L216] p21_old = nomsg [L217] p21_new = nomsg [L218] p23_old = nomsg [L219] p23_new = nomsg [L220] p31_old = nomsg [L221] p31_new = nomsg [L222] p32_old = nomsg [L223] p32_new = nomsg [L224] main__i2 = 0 [L225] COND TRUE main__i2 < 6 [L228] COND FALSE !(!(mode1 == 0)) [L234] COND TRUE ((int)r1) < 2 [L236] COND FALSE !(!(ep12 == 0)) [L247] COND FALSE !(!(ep13 == 0)) [L258] mode1 = 1 [L260] COND FALSE !(!(mode2 == 0)) [L266] COND TRUE ((int)r2) < 2 [L268] COND FALSE !(!(ep21 == 0)) [L279] COND FALSE !(!(ep23 == 0)) [L290] mode2 = 1 [L292] COND FALSE !(!(mode3 == 0)) [L298] COND TRUE ((int)r3) < 2 [L300] COND FALSE !(!(ep31 == 0)) [L311] COND FALSE !(!(ep32 == 0)) [L322] mode3 = 1 [L323] p12_old = p12_new [L324] p12_new = nomsg [L325] p13_old = p13_new [L326] p13_new = nomsg [L327] p21_old = p21_new [L328] p21_new = nomsg [L329] p23_old = p23_new [L330] p23_new = nomsg [L331] p31_old = p31_new [L332] p31_new = nomsg [L333] p32_old = p32_new [L334] p32_new = nomsg [L336] int check__tmp; [L337] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L339] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L341] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L343] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L345] COND FALSE !(((int)r1) >= 2) [L351] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L353] COND TRUE ((int)r1) < 2 [L355] COND FALSE !(((int)r1) >= 2) [L361] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L363] COND TRUE ((int)r1) < 2 [L365] check__tmp = 1 [L366] __return_1836 = check__tmp [L367] main__c1 = __return_1836 [L369] _Bool __tmp_1; [L370] __tmp_1 = main__c1 [L371] _Bool assert__arg; [L372] assert__arg = __tmp_1 [L373] COND FALSE !(assert__arg == 0) [L379] int main____CPAchecker_TMP_0 = main__i2; [L380] main__i2 = main__i2 + 1 [L381] COND TRUE main__i2 < 6 [L384] COND TRUE !(mode1 == 0) [L386] r1 = (char)(((int)r1) + 1) [L387] COND FALSE !(!(ep21 == 0)) [L395] COND FALSE !(!(ep31 == 0)) [L403] COND FALSE !(((int)r1) == 2) [L409] mode1 = 0 [L411] COND TRUE !(mode2 == 0) [L413] r2 = (char)(((int)r2) + 1) [L414] COND FALSE !(!(ep12 == 0)) [L422] COND FALSE !(!(ep32 == 0)) [L430] COND FALSE !(((int)r2) == 2) [L436] mode2 = 0 [L438] COND TRUE !(mode3 == 0) [L440] r3 = (char)(((int)r3) + 1) [L441] COND FALSE !(!(ep13 == 0)) [L449] COND FALSE !(!(ep23 == 0)) [L457] COND FALSE !(((int)r3) == 2) [L463] mode3 = 0 [L464] p12_old = p12_new [L465] p12_new = nomsg [L466] p13_old = p13_new [L467] p13_new = nomsg [L468] p21_old = p21_new [L469] p21_new = nomsg [L470] p23_old = p23_new [L471] p23_new = nomsg [L472] p31_old = p31_new [L473] p31_new = nomsg [L474] p32_old = p32_new [L475] p32_new = nomsg [L477] int check__tmp; [L478] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L480] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L482] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L484] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L486] COND FALSE !(((int)r1) >= 2) [L492] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L494] COND TRUE ((int)r1) < 2 [L496] COND FALSE !(((int)r1) >= 2) [L502] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L504] COND TRUE ((int)r1) < 2 [L506] check__tmp = 1 [L507] __return_1954 = check__tmp [L508] main__c1 = __return_1954 [L510] _Bool __tmp_2; [L511] __tmp_2 = main__c1 [L512] _Bool assert__arg; [L513] assert__arg = __tmp_2 [L514] COND FALSE !(assert__arg == 0) [L520] int main____CPAchecker_TMP_0 = main__i2; [L521] main__i2 = main__i2 + 1 [L522] COND TRUE main__i2 < 6 [L525] COND FALSE !(!(mode1 == 0)) [L531] COND TRUE ((int)r1) < 2 [L533] COND FALSE !(!(ep12 == 0)) [L544] COND FALSE !(!(ep13 == 0)) [L555] mode1 = 1 [L557] COND FALSE !(!(mode2 == 0)) [L563] COND TRUE ((int)r2) < 2 [L565] COND FALSE !(!(ep21 == 0)) [L576] COND FALSE !(!(ep23 == 0)) [L587] mode2 = 1 [L589] COND FALSE !(!(mode3 == 0)) [L595] COND TRUE ((int)r3) < 2 [L597] COND FALSE !(!(ep31 == 0)) [L608] COND FALSE !(!(ep32 == 0)) [L619] mode3 = 1 [L620] p12_old = p12_new [L621] p12_new = nomsg [L622] p13_old = p13_new [L623] p13_new = nomsg [L624] p21_old = p21_new [L625] p21_new = nomsg [L626] p23_old = p23_new [L627] p23_new = nomsg [L628] p31_old = p31_new [L629] p31_new = nomsg [L630] p32_old = p32_new [L631] p32_new = nomsg [L633] int check__tmp; [L634] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L636] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L638] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L640] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L642] COND FALSE !(((int)r1) >= 2) [L648] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L650] COND TRUE ((int)r1) < 2 [L652] COND FALSE !(((int)r1) >= 2) [L658] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L660] COND TRUE ((int)r1) < 2 [L662] check__tmp = 1 [L663] __return_2075 = check__tmp [L664] main__c1 = __return_2075 [L666] _Bool __tmp_3; [L667] __tmp_3 = main__c1 [L668] _Bool assert__arg; [L669] assert__arg = __tmp_3 [L670] COND FALSE !(assert__arg == 0) [L676] int main____CPAchecker_TMP_0 = main__i2; [L677] main__i2 = main__i2 + 1 [L678] COND TRUE main__i2 < 6 [L681] COND TRUE !(mode1 == 0) [L683] r1 = (char)(((int)r1) + 1) [L684] COND FALSE !(!(ep21 == 0)) [L692] COND FALSE !(!(ep31 == 0)) [L700] COND TRUE ((int)r1) == 2 [L702] COND TRUE ((int)max1) == ((int)id1) [L704] st1 = 1 [L706] mode1 = 0 [L708] COND TRUE !(mode2 == 0) [L710] r2 = (char)(((int)r2) + 1) [L711] COND FALSE !(!(ep12 == 0)) [L719] COND FALSE !(!(ep32 == 0)) [L727] COND TRUE ((int)r2) == 2 [L729] COND TRUE ((int)max2) == ((int)id2) [L731] st2 = 1 [L733] mode2 = 0 [L735] COND TRUE !(mode3 == 0) [L737] r3 = (char)(((int)r3) + 1) [L738] COND FALSE !(!(ep13 == 0)) [L746] COND FALSE !(!(ep23 == 0)) [L754] COND TRUE ((int)r3) == 2 [L756] COND TRUE ((int)max3) == ((int)id3) [L758] st3 = 1 [L760] mode3 = 0 [L761] p12_old = p12_new [L762] p12_new = nomsg [L763] p13_old = p13_new [L764] p13_new = nomsg [L765] p21_old = p21_new [L766] p21_new = nomsg [L767] p23_old = p23_new [L768] p23_new = nomsg [L769] p31_old = p31_new [L770] p31_new = nomsg [L771] p32_old = p32_new [L772] p32_new = nomsg [L774] int check__tmp; [L775] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1400] check__tmp = 0 [L803] __return_2198 = check__tmp [L804] main__c1 = __return_2198 [L805] __tmp_2199_0 = main____CPAchecker_TMP_0 [L807] main____CPAchecker_TMP_0 = __tmp_2199_0 [L809] _Bool __tmp_4; [L810] __tmp_4 = main__c1 [L811] _Bool assert__arg; [L812] assert__arg = __tmp_4 [L813] COND TRUE assert__arg == 0 [L815] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 838 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 64.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 44.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9789 SDtfs, 7678 SDslu, 7634 SDs, 0 SdLazy, 10270 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19583occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 36325 StatesRemovedByMinimization, 9 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...