/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:25:23,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:25:23,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:25:23,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:25:23,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:25:23,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:25:23,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:25:23,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:25:23,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:25:23,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:25:23,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:25:23,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:25:23,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:25:23,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:25:23,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:25:23,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:25:23,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:25:23,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:25:23,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:25:23,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:25:23,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:25:23,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:25:23,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:25:23,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:25:23,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 02:25:23,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 02:25:23,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 02:25:23,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 02:25:23,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 02:25:23,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 02:25:23,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:25:23,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:25:23,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:25:23,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:25:23,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:25:23,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:25:23,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:25:23,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:25:23,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:25:23,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:25:23,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:25:23,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:25:23,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:25:24,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:25:24,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:25:24,027 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:25:24,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:25:24,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:25:24,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:25:24,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:25:24,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:25:24,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:25:24,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:25:24,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:25:24,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:25:24,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:25:24,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:25:24,040 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:25:24,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:25:24,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:25:24,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:25:24,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:25:24,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:25:24,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:25:24,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:25:24,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:25:24,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:25:24,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:25:24,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:25:24,539 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:25:24,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-11-07 02:25:24,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1958985d6/598327d01c5144f4af0329c541057027/FLAG8f69160b9 [2020-11-07 02:25:25,531 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:25:25,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-11-07 02:25:25,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1958985d6/598327d01c5144f4af0329c541057027/FLAG8f69160b9 [2020-11-07 02:25:25,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1958985d6/598327d01c5144f4af0329c541057027 [2020-11-07 02:25:25,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:25:25,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:25:25,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:25:25,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:25:25,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:25:25,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:25:25" (1/1) ... [2020-11-07 02:25:25,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256c48e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:25, skipping insertion in model container [2020-11-07 02:25:25,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:25:25" (1/1) ... [2020-11-07 02:25:25,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:25:25,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:25:26,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:25:26,511 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:25:26,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:25:26,918 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:25:26,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:26 WrapperNode [2020-11-07 02:25:26,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:25:26,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:25:26,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:25:26,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:25:26,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:26" (1/1) ... [2020-11-07 02:25:26,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:26" (1/1) ... [2020-11-07 02:25:26,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:26" (1/1) ... [2020-11-07 02:25:26,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:26" (1/1) ... [2020-11-07 02:25:27,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:26" (1/1) ... [2020-11-07 02:25:27,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:26" (1/1) ... [2020-11-07 02:25:27,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:26" (1/1) ... [2020-11-07 02:25:27,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:25:27,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:25:27,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:25:27,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:25:27,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:26" (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 [2020-11-07 02:25:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:25:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:25:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:25:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:25:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:25:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:25:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:25:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:25:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:25:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-07 02:25:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 02:25:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-11-07 02:25:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:25:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-11-07 02:25:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-11-07 02:25:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-11-07 02:25:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-11-07 02:25:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-11-07 02:25:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-11-07 02:25:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-11-07 02:25:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:25:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:25:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:25:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:25:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:25:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:25:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:25:29,405 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:25:29,407 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 02:25:29,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:25:29 BoogieIcfgContainer [2020-11-07 02:25:29,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:25:29,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:25:29,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:25:29,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:25:29,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:25:25" (1/3) ... [2020-11-07 02:25:29,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6dc93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:25:29, skipping insertion in model container [2020-11-07 02:25:29,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:26" (2/3) ... [2020-11-07 02:25:29,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6dc93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:25:29, skipping insertion in model container [2020-11-07 02:25:29,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:25:29" (3/3) ... [2020-11-07 02:25:29,425 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-11-07 02:25:29,442 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:25:29,447 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:25:29,462 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:25:29,494 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:25:29,495 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:25:29,495 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:25:29,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:25:29,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:25:29,496 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:25:29,496 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:25:29,496 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:25:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states. [2020-11-07 02:25:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-11-07 02:25:29,597 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:25:29,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:25:29,599 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:25:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:25:29,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1278777846, now seen corresponding path program 1 times [2020-11-07 02:25:29,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:25:29,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977264493] [2020-11-07 02:25:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:25:29,708 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:25:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:30,931 WARN L194 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-11-07 02:25:30,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:25:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:25:31,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977264493] [2020-11-07 02:25:31,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:25:31,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:25:31,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308196998] [2020-11-07 02:25:31,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:25:31,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:25:31,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:25:31,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:25:31,497 INFO L87 Difference]: Start difference. First operand 1244 states. Second operand 5 states. [2020-11-07 02:25:38,918 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-11-07 02:25:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:25:40,496 INFO L93 Difference]: Finished difference Result 3278 states and 4217 transitions. [2020-11-07 02:25:40,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 02:25:40,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 474 [2020-11-07 02:25:40,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:25:40,535 INFO L225 Difference]: With dead ends: 3278 [2020-11-07 02:25:40,535 INFO L226 Difference]: Without dead ends: 1962 [2020-11-07 02:25:40,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:25:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2020-11-07 02:25:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1838. [2020-11-07 02:25:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-11-07 02:25:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2178 transitions. [2020-11-07 02:25:40,828 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2178 transitions. Word has length 474 [2020-11-07 02:25:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:25:40,833 INFO L481 AbstractCegarLoop]: Abstraction has 1838 states and 2178 transitions. [2020-11-07 02:25:40,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:25:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2178 transitions. [2020-11-07 02:25:40,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-11-07 02:25:40,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:25:40,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:25:40,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:25:40,853 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:25:40,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:25:40,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2050787126, now seen corresponding path program 1 times [2020-11-07 02:25:40,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:25:40,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749541637] [2020-11-07 02:25:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:25:40,865 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:25:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:41,361 WARN L194 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-11-07 02:25:41,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:25:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:25:41,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749541637] [2020-11-07 02:25:41,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:25:41,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:25:41,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414624206] [2020-11-07 02:25:41,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:25:41,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:25:41,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:25:41,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:25:41,689 INFO L87 Difference]: Start difference. First operand 1838 states and 2178 transitions. Second operand 4 states. [2020-11-07 02:25:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:25:46,779 INFO L93 Difference]: Finished difference Result 5075 states and 6072 transitions. [2020-11-07 02:25:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 02:25:46,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 475 [2020-11-07 02:25:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:25:46,805 INFO L225 Difference]: With dead ends: 5075 [2020-11-07 02:25:46,805 INFO L226 Difference]: Without dead ends: 3471 [2020-11-07 02:25:46,813 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 [2020-11-07 02:25:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2020-11-07 02:25:47,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 1840. [2020-11-07 02:25:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1840 states. [2020-11-07 02:25:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2180 transitions. [2020-11-07 02:25:47,038 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2180 transitions. Word has length 475 [2020-11-07 02:25:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:25:47,040 INFO L481 AbstractCegarLoop]: Abstraction has 1840 states and 2180 transitions. [2020-11-07 02:25:47,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:25:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2180 transitions. [2020-11-07 02:25:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-11-07 02:25:47,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:25:47,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:25:47,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:25:47,049 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:25:47,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:25:47,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1614586746, now seen corresponding path program 1 times [2020-11-07 02:25:47,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:25:47,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947210185] [2020-11-07 02:25:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:25:47,061 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:25:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:47,713 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-11-07 02:25:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:25:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:25:48,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947210185] [2020-11-07 02:25:48,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:25:48,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:25:48,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867953258] [2020-11-07 02:25:48,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:25:48,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:25:48,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:25:48,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:25:48,011 INFO L87 Difference]: Start difference. First operand 1840 states and 2180 transitions. Second operand 5 states. [2020-11-07 02:25:53,508 WARN L194 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-11-07 02:25:55,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:25:55,064 INFO L93 Difference]: Finished difference Result 4976 states and 5938 transitions. [2020-11-07 02:25:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:25:55,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 476 [2020-11-07 02:25:55,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:25:55,083 INFO L225 Difference]: With dead ends: 4976 [2020-11-07 02:25:55,084 INFO L226 Difference]: Without dead ends: 3373 [2020-11-07 02:25:55,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:25:55,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2020-11-07 02:25:55,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3249. [2020-11-07 02:25:55,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3249 states. [2020-11-07 02:25:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 3870 transitions. [2020-11-07 02:25:55,375 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 3870 transitions. Word has length 476 [2020-11-07 02:25:55,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:25:55,376 INFO L481 AbstractCegarLoop]: Abstraction has 3249 states and 3870 transitions. [2020-11-07 02:25:55,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:25:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 3870 transitions. [2020-11-07 02:25:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-11-07 02:25:55,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:25:55,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:25:55,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:25:55,387 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:25:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:25:55,388 INFO L82 PathProgramCache]: Analyzing trace with hash -580004914, now seen corresponding path program 1 times [2020-11-07 02:25:55,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:25:55,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097575216] [2020-11-07 02:25:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:25:55,397 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:25:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:55,844 WARN L194 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-11-07 02:25:55,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:25:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:25:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:25:56,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097575216] [2020-11-07 02:25:56,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:25:56,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:25:56,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111098382] [2020-11-07 02:25:56,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:25:56,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:25:56,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:25:56,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:25:56,025 INFO L87 Difference]: Start difference. First operand 3249 states and 3870 transitions. Second operand 4 states. [2020-11-07 02:26:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:26:01,164 INFO L93 Difference]: Finished difference Result 9245 states and 11065 transitions. [2020-11-07 02:26:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 02:26:01,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 477 [2020-11-07 02:26:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:26:01,196 INFO L225 Difference]: With dead ends: 9245 [2020-11-07 02:26:01,197 INFO L226 Difference]: Without dead ends: 6253 [2020-11-07 02:26:01,205 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 [2020-11-07 02:26:01,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2020-11-07 02:26:01,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 3253. [2020-11-07 02:26:01,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3253 states. [2020-11-07 02:26:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 3874 transitions. [2020-11-07 02:26:01,563 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 3874 transitions. Word has length 477 [2020-11-07 02:26:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:26:01,564 INFO L481 AbstractCegarLoop]: Abstraction has 3253 states and 3874 transitions. [2020-11-07 02:26:01,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:26:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 3874 transitions. [2020-11-07 02:26:01,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-11-07 02:26:01,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:01,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:26:01,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:26:01,574 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:01,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:01,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1958274926, now seen corresponding path program 1 times [2020-11-07 02:26:01,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:01,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231631220] [2020-11-07 02:26:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:01,580 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:02,210 WARN L194 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-11-07 02:26:02,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:26:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:26:02,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231631220] [2020-11-07 02:26:02,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:26:02,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:26:02,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412595109] [2020-11-07 02:26:02,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:26:02,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:26:02,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:26:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:26:02,477 INFO L87 Difference]: Start difference. First operand 3253 states and 3874 transitions. Second operand 5 states. [2020-11-07 02:26:08,262 WARN L194 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-11-07 02:26:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:26:09,827 INFO L93 Difference]: Finished difference Result 9085 states and 10852 transitions. [2020-11-07 02:26:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:26:09,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 478 [2020-11-07 02:26:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:26:09,858 INFO L225 Difference]: With dead ends: 9085 [2020-11-07 02:26:09,858 INFO L226 Difference]: Without dead ends: 6095 [2020-11-07 02:26:09,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:26:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2020-11-07 02:26:10,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 5971. [2020-11-07 02:26:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5971 states. [2020-11-07 02:26:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5971 states to 5971 states and 7106 transitions. [2020-11-07 02:26:10,396 INFO L78 Accepts]: Start accepts. Automaton has 5971 states and 7106 transitions. Word has length 478 [2020-11-07 02:26:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:26:10,397 INFO L481 AbstractCegarLoop]: Abstraction has 5971 states and 7106 transitions. [2020-11-07 02:26:10,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:26:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5971 states and 7106 transitions. [2020-11-07 02:26:10,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-11-07 02:26:10,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:10,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:26:10,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:26:10,412 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:10,413 INFO L82 PathProgramCache]: Analyzing trace with hash 728645498, now seen corresponding path program 1 times [2020-11-07 02:26:10,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:10,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396777553] [2020-11-07 02:26:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:10,417 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:10,944 WARN L194 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-11-07 02:26:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:26:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:26:11,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396777553] [2020-11-07 02:26:11,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:26:11,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:26:11,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935449521] [2020-11-07 02:26:11,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:26:11,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:26:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:26:11,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:26:11,163 INFO L87 Difference]: Start difference. First operand 5971 states and 7106 transitions. Second operand 4 states. [2020-11-07 02:26:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:26:16,576 INFO L93 Difference]: Finished difference Result 16897 states and 20157 transitions. [2020-11-07 02:26:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 02:26:16,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 479 [2020-11-07 02:26:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:26:16,622 INFO L225 Difference]: With dead ends: 16897 [2020-11-07 02:26:16,622 INFO L226 Difference]: Without dead ends: 11601 [2020-11-07 02:26:16,634 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 [2020-11-07 02:26:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11601 states. [2020-11-07 02:26:17,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11601 to 5979. [2020-11-07 02:26:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5979 states. [2020-11-07 02:26:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5979 states to 5979 states and 7114 transitions. [2020-11-07 02:26:17,332 INFO L78 Accepts]: Start accepts. Automaton has 5979 states and 7114 transitions. Word has length 479 [2020-11-07 02:26:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:26:17,332 INFO L481 AbstractCegarLoop]: Abstraction has 5979 states and 7114 transitions. [2020-11-07 02:26:17,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:26:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 5979 states and 7114 transitions. [2020-11-07 02:26:17,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-11-07 02:26:17,346 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:17,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:26:17,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:26:17,346 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:17,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:17,347 INFO L82 PathProgramCache]: Analyzing trace with hash -337262418, now seen corresponding path program 1 times [2020-11-07 02:26:17,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:17,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101063178] [2020-11-07 02:26:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:17,352 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:26:17,436 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:26:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:26:17,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:26:18,367 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 02:26:18,367 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 02:26:18,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 02:26:18,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:26:18 BoogieIcfgContainer [2020-11-07 02:26:18,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:26:18,428 INFO L168 Benchmark]: Toolchain (without parser) took 52687.89 ms. Allocated memory was 168.8 MB in the beginning and 838.9 MB in the end (delta: 670.0 MB). Free memory was 127.7 MB in the beginning and 533.2 MB in the end (delta: -405.5 MB). Peak memory consumption was 264.9 MB. Max. memory is 8.0 GB. [2020-11-07 02:26:18,428 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 168.8 MB. Free memory is still 145.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:26:18,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1166.53 ms. Allocated memory is still 168.8 MB. Free memory was 127.0 MB in the beginning and 143.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 8.0 GB. [2020-11-07 02:26:18,430 INFO L168 Benchmark]: Boogie Preprocessor took 176.78 ms. Allocated memory is still 168.8 MB. Free memory was 143.3 MB in the beginning and 138.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-07 02:26:18,431 INFO L168 Benchmark]: RCFGBuilder took 2315.35 ms. Allocated memory was 168.8 MB in the beginning and 222.3 MB in the end (delta: 53.5 MB). Free memory was 138.4 MB in the beginning and 148.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 122.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:26:18,432 INFO L168 Benchmark]: TraceAbstraction took 49008.66 ms. Allocated memory was 222.3 MB in the beginning and 838.9 MB in the end (delta: 616.6 MB). Free memory was 147.5 MB in the beginning and 533.2 MB in the end (delta: -385.7 MB). Peak memory consumption was 230.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:26:18,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 168.8 MB. Free memory is still 145.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1166.53 ms. Allocated memory is still 168.8 MB. Free memory was 127.0 MB in the beginning and 143.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 176.78 ms. Allocated memory is still 168.8 MB. Free memory was 143.3 MB in the beginning and 138.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2315.35 ms. Allocated memory was 168.8 MB in the beginning and 222.3 MB in the end (delta: 53.5 MB). Free memory was 138.4 MB in the beginning and 148.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 122.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 49008.66 ms. Allocated memory was 222.3 MB in the beginning and 838.9 MB in the end (delta: 616.6 MB). Free memory was 147.5 MB in the beginning and 533.2 MB in the end (delta: -385.7 MB). Peak memory consumption was 230.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] _Bool newmax1 = 0; [L49] char id2 = '\x0'; [L50] char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] _Bool newmax2 = 0; [L57] char id3 = '\x0'; [L58] char r3 = '\x0'; [L59] char st3 = '\x0'; [L60] char nl3 = '\x0'; [L61] char m3 = '\x0'; [L62] char max3 = '\x0'; [L63] _Bool mode3 = 0; [L64] _Bool newmax3 = 0; [L68] void (*nodes[3])() = { &node1, &node2, &node3 }; [L72] int __return_1863; [L73] int __return_2009; [L74] int __return_2142; [L75] int __return_2281; [L76] int __return_3069; [L77] int __return_3038; [L78] int __return_2975; [L79] int __return_2941; [L80] int __tmp_2420_0; [L81] int __return_2543; [L82] int __return_2433; [L83] int __return_2828; [L84] int __return_2794; [L85] int __return_2710; [L86] int __return_2419; [L89] int main__c1; [L90] int main__i2; [L91] main__c1 = 0 [L92] ep12 = __VERIFIER_nondet_bool() [L93] ep13 = __VERIFIER_nondet_bool() [L94] ep21 = __VERIFIER_nondet_bool() [L95] ep23 = __VERIFIER_nondet_bool() [L96] ep31 = __VERIFIER_nondet_bool() [L97] ep32 = __VERIFIER_nondet_bool() [L98] id1 = __VERIFIER_nondet_char() [L99] r1 = __VERIFIER_nondet_char() [L100] st1 = __VERIFIER_nondet_char() [L101] nl1 = __VERIFIER_nondet_char() [L102] m1 = __VERIFIER_nondet_char() [L103] max1 = __VERIFIER_nondet_char() [L104] mode1 = __VERIFIER_nondet_bool() [L105] newmax1 = __VERIFIER_nondet_bool() [L106] id2 = __VERIFIER_nondet_char() [L107] r2 = __VERIFIER_nondet_char() [L108] st2 = __VERIFIER_nondet_char() [L109] nl2 = __VERIFIER_nondet_char() [L110] m2 = __VERIFIER_nondet_char() [L111] max2 = __VERIFIER_nondet_char() [L112] mode2 = __VERIFIER_nondet_bool() [L113] newmax2 = __VERIFIER_nondet_bool() [L114] id3 = __VERIFIER_nondet_char() [L115] r3 = __VERIFIER_nondet_char() [L116] st3 = __VERIFIER_nondet_char() [L117] nl3 = __VERIFIER_nondet_char() [L118] m3 = __VERIFIER_nondet_char() [L119] max3 = __VERIFIER_nondet_char() [L120] mode3 = __VERIFIER_nondet_bool() [L121] newmax3 = __VERIFIER_nondet_bool() [L123] _Bool init__r121; [L124] _Bool init__r131; [L125] _Bool init__r211; [L126] _Bool init__r231; [L127] _Bool init__r311; [L128] _Bool init__r321; [L129] _Bool init__r122; [L130] int init__tmp; [L131] _Bool init__r132; [L132] int init__tmp___0; [L133] _Bool init__r212; [L134] int init__tmp___1; [L135] _Bool init__r232; [L136] int init__tmp___2; [L137] _Bool init__r312; [L138] int init__tmp___3; [L139] _Bool init__r322; [L140] int init__tmp___4; [L141] int init__tmp___5; [L142] init__r121 = ep12 [L143] init__r131 = ep13 [L144] init__r211 = ep21 [L145] init__r231 = ep23 [L146] init__r311 = ep31 [L147] init__r321 = ep32 [L148] COND FALSE !(!(init__r121 == 0)) [L3142] COND FALSE !(!(init__r131 == 0)) [L3158] init__tmp = 0 [L152] init__r122 = (_Bool)init__tmp [L153] COND FALSE !(!(init__r131 == 0)) [L3119] COND FALSE !(!(init__r121 == 0)) [L3135] init__tmp___0 = 0 [L157] init__r132 = (_Bool)init__tmp___0 [L158] COND FALSE !(!(init__r211 == 0)) [L3096] COND FALSE !(!(init__r231 == 0)) [L3112] init__tmp___1 = 0 [L162] init__r212 = (_Bool)init__tmp___1 [L163] COND FALSE !(!(init__r231 == 0)) [L3073] COND FALSE !(!(init__r211 == 0)) [L3089] init__tmp___2 = 0 [L167] init__r232 = (_Bool)init__tmp___2 [L168] COND FALSE !(!(init__r311 == 0)) [L3050] COND FALSE !(!(init__r321 == 0)) [L3066] init__tmp___3 = 0 [L172] init__r312 = (_Bool)init__tmp___3 [L173] COND FALSE !(!(init__r321 == 0)) [L3027] COND FALSE !(!(init__r311 == 0)) [L3043] init__tmp___4 = 0 [L177] init__r322 = (_Bool)init__tmp___4 [L178] COND TRUE ((int)id1) != ((int)id2) [L180] COND TRUE ((int)id1) != ((int)id3) [L182] COND TRUE ((int)id2) != ((int)id3) [L184] COND TRUE ((int)id1) >= 0 [L186] COND TRUE ((int)id2) >= 0 [L188] COND TRUE ((int)id3) >= 0 [L190] COND TRUE ((int)r1) == 0 [L192] COND TRUE ((int)r2) == 0 [L194] COND TRUE ((int)r3) == 0 [L196] COND TRUE ((int)max1) == ((int)id1) [L198] COND TRUE ((int)max2) == ((int)id2) [L200] COND TRUE ((int)max3) == ((int)id3) [L202] COND TRUE ((int)st1) == 0 [L204] COND TRUE ((int)st2) == 0 [L206] COND TRUE ((int)st3) == 0 [L208] COND TRUE ((int)nl1) == 0 [L210] COND TRUE ((int)nl2) == 0 [L212] COND TRUE ((int)nl3) == 0 [L214] COND TRUE ((int)mode1) == 0 [L216] COND TRUE ((int)mode2) == 0 [L218] COND TRUE ((int)mode3) == 0 [L220] COND TRUE !(newmax1 == 0) [L222] COND TRUE !(newmax2 == 0) [L224] COND TRUE !(newmax3 == 0) [L226] init__tmp___5 = 1 [L227] __return_1863 = init__tmp___5 [L228] main__i2 = __return_1863 [L229] COND TRUE main__i2 != 0 [L231] p12_old = nomsg [L232] p12_new = nomsg [L233] p13_old = nomsg [L234] p13_new = nomsg [L235] p21_old = nomsg [L236] p21_new = nomsg [L237] p23_old = nomsg [L238] p23_new = nomsg [L239] p31_old = nomsg [L240] p31_new = nomsg [L241] p32_old = nomsg [L242] p32_new = nomsg [L243] main__i2 = 0 [L244] COND TRUE main__i2 < 6 [L247] _Bool node1__newmax; [L248] node1__newmax = 0 [L249] COND FALSE !(!(mode1 == 0)) [L255] COND TRUE ((int)r1) < 2 [L257] COND FALSE !(!(ep12 == 0)) [L270] COND FALSE !(!(ep13 == 0)) [L283] mode1 = 1 [L285] _Bool node2__newmax; [L286] node2__newmax = 0 [L287] COND FALSE !(!(mode2 == 0)) [L293] COND TRUE ((int)r2) < 2 [L295] COND FALSE !(!(ep21 == 0)) [L308] COND FALSE !(!(ep23 == 0)) [L321] mode2 = 1 [L323] _Bool node3__newmax; [L324] node3__newmax = 0 [L325] COND FALSE !(!(mode3 == 0)) [L331] COND TRUE ((int)r3) < 2 [L333] COND FALSE !(!(ep31 == 0)) [L346] COND FALSE !(!(ep32 == 0)) [L359] mode3 = 1 [L360] p12_old = p12_new [L361] p12_new = nomsg [L362] p13_old = p13_new [L363] p13_new = nomsg [L364] p21_old = p21_new [L365] p21_new = nomsg [L366] p23_old = p23_new [L367] p23_new = nomsg [L368] p31_old = p31_new [L369] p31_new = nomsg [L370] p32_old = p32_new [L371] p32_new = nomsg [L373] int check__tmp; [L374] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L376] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L378] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L380] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L382] COND FALSE !(((int)r1) >= 2) [L388] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L390] COND TRUE ((int)r1) < 2 [L392] COND FALSE !(((int)r1) >= 2) [L398] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L400] COND TRUE ((int)r1) < 2 [L402] check__tmp = 1 [L403] __return_2009 = check__tmp [L404] main__c1 = __return_2009 [L406] _Bool __tmp_1; [L407] __tmp_1 = main__c1 [L408] _Bool assert__arg; [L409] assert__arg = __tmp_1 [L410] COND FALSE !(assert__arg == 0) [L416] int main____CPAchecker_TMP_0 = main__i2; [L417] main__i2 = main__i2 + 1 [L418] COND TRUE main__i2 < 6 [L421] _Bool node1__newmax; [L422] node1__newmax = 0 [L423] COND TRUE !(mode1 == 0) [L425] r1 = (char)(((int)r1) + 1) [L426] COND FALSE !(!(ep21 == 0)) [L435] COND FALSE !(!(ep31 == 0)) [L444] newmax1 = node1__newmax [L445] COND FALSE !(((int)r1) == 2) [L451] mode1 = 0 [L453] _Bool node2__newmax; [L454] node2__newmax = 0 [L455] COND TRUE !(mode2 == 0) [L457] r2 = (char)(((int)r2) + 1) [L458] COND FALSE !(!(ep12 == 0)) [L467] COND FALSE !(!(ep32 == 0)) [L476] newmax2 = node2__newmax [L477] COND FALSE !(((int)r2) == 2) [L483] mode2 = 0 [L485] _Bool node3__newmax; [L486] node3__newmax = 0 [L487] COND TRUE !(mode3 == 0) [L489] r3 = (char)(((int)r3) + 1) [L490] COND FALSE !(!(ep13 == 0)) [L499] COND FALSE !(!(ep23 == 0)) [L508] newmax3 = node3__newmax [L509] COND FALSE !(((int)r3) == 2) [L515] mode3 = 0 [L516] p12_old = p12_new [L517] p12_new = nomsg [L518] p13_old = p13_new [L519] p13_new = nomsg [L520] p21_old = p21_new [L521] p21_new = nomsg [L522] p23_old = p23_new [L523] p23_new = nomsg [L524] p31_old = p31_new [L525] p31_new = nomsg [L526] p32_old = p32_new [L527] p32_new = nomsg [L529] int check__tmp; [L530] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L532] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L534] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L536] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L538] COND FALSE !(((int)r1) >= 2) [L544] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L546] COND TRUE ((int)r1) < 2 [L548] COND FALSE !(((int)r1) >= 2) [L554] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L556] COND TRUE ((int)r1) < 2 [L558] check__tmp = 1 [L559] __return_2142 = check__tmp [L560] main__c1 = __return_2142 [L562] _Bool __tmp_2; [L563] __tmp_2 = main__c1 [L564] _Bool assert__arg; [L565] assert__arg = __tmp_2 [L566] COND FALSE !(assert__arg == 0) [L572] int main____CPAchecker_TMP_0 = main__i2; [L573] main__i2 = main__i2 + 1 [L574] COND TRUE main__i2 < 6 [L577] _Bool node1__newmax; [L578] node1__newmax = 0 [L579] COND FALSE !(!(mode1 == 0)) [L585] COND TRUE ((int)r1) < 2 [L587] COND FALSE !(!(ep12 == 0)) [L600] COND FALSE !(!(ep13 == 0)) [L613] mode1 = 1 [L615] _Bool node2__newmax; [L616] node2__newmax = 0 [L617] COND FALSE !(!(mode2 == 0)) [L623] COND TRUE ((int)r2) < 2 [L625] COND FALSE !(!(ep21 == 0)) [L638] COND FALSE !(!(ep23 == 0)) [L651] mode2 = 1 [L653] _Bool node3__newmax; [L654] node3__newmax = 0 [L655] COND FALSE !(!(mode3 == 0)) [L661] COND TRUE ((int)r3) < 2 [L663] COND FALSE !(!(ep31 == 0)) [L676] COND FALSE !(!(ep32 == 0)) [L689] mode3 = 1 [L690] p12_old = p12_new [L691] p12_new = nomsg [L692] p13_old = p13_new [L693] p13_new = nomsg [L694] p21_old = p21_new [L695] p21_new = nomsg [L696] p23_old = p23_new [L697] p23_new = nomsg [L698] p31_old = p31_new [L699] p31_new = nomsg [L700] p32_old = p32_new [L701] p32_new = nomsg [L703] int check__tmp; [L704] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L706] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L708] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L710] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L712] COND FALSE !(((int)r1) >= 2) [L718] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L720] COND TRUE ((int)r1) < 2 [L722] COND FALSE !(((int)r1) >= 2) [L728] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L730] COND TRUE ((int)r1) < 2 [L732] check__tmp = 1 [L733] __return_2281 = check__tmp [L734] main__c1 = __return_2281 [L736] _Bool __tmp_3; [L737] __tmp_3 = main__c1 [L738] _Bool assert__arg; [L739] assert__arg = __tmp_3 [L740] COND FALSE !(assert__arg == 0) [L746] int main____CPAchecker_TMP_0 = main__i2; [L747] main__i2 = main__i2 + 1 [L748] COND TRUE main__i2 < 6 [L751] _Bool node1__newmax; [L752] node1__newmax = 0 [L753] COND TRUE !(mode1 == 0) [L755] r1 = (char)(((int)r1) + 1) [L756] COND FALSE !(!(ep21 == 0)) [L765] COND FALSE !(!(ep31 == 0)) [L774] newmax1 = node1__newmax [L775] COND TRUE ((int)r1) == 2 [L777] COND TRUE ((int)max1) == ((int)id1) [L779] st1 = 1 [L780] mode1 = 0 [L782] _Bool node2__newmax; [L783] node2__newmax = 0 [L784] COND TRUE !(mode2 == 0) [L786] r2 = (char)(((int)r2) + 1) [L787] COND FALSE !(!(ep12 == 0)) [L796] COND FALSE !(!(ep32 == 0)) [L805] newmax2 = node2__newmax [L806] COND TRUE ((int)r2) == 2 [L808] COND TRUE ((int)max2) == ((int)id2) [L810] st2 = 1 [L811] mode2 = 0 [L813] _Bool node3__newmax; [L814] node3__newmax = 0 [L815] COND TRUE !(mode3 == 0) [L817] r3 = (char)(((int)r3) + 1) [L818] COND FALSE !(!(ep13 == 0)) [L827] COND FALSE !(!(ep23 == 0)) [L836] newmax3 = node3__newmax [L837] COND TRUE ((int)r3) == 2 [L839] COND TRUE ((int)max3) == ((int)id3) [L841] st3 = 1 [L842] mode3 = 0 [L843] p12_old = p12_new [L844] p12_new = nomsg [L845] p13_old = p13_new [L846] p13_new = nomsg [L847] p21_old = p21_new [L848] p21_new = nomsg [L849] p23_old = p23_new [L850] p23_new = nomsg [L851] p31_old = p31_new [L852] p31_new = nomsg [L853] p32_old = p32_new [L854] p32_new = nomsg [L856] int check__tmp; [L857] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L863] check__tmp = 0 [L864] __return_3069 = check__tmp [L865] main__c1 = __return_3069 [L867] _Bool __tmp_4; [L868] __tmp_4 = main__c1 [L869] _Bool assert__arg; [L870] assert__arg = __tmp_4 [L871] COND TRUE assert__arg == 0 [L873] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 1249 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 39.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11143 SDtfs, 10631 SDslu, 8208 SDs, 0 SdLazy, 11337 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5979occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 10625 StatesRemovedByMinimization, 6 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...