/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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:09:23,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:09:23,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:09:23,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:09:23,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:09:23,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:09:23,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:09:23,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:09:23,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:09:23,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:09:23,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:09:23,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:09:23,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:09:23,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:09:23,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:09:23,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:09:23,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:09:23,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:09:23,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:09:23,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:09:23,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:09:23,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:09:23,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:09:23,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:09:23,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 22:09:23,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 22:09:23,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 22:09:23,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 22:09:23,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 22:09:23,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 22:09:23,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 22:09:23,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 22:09:23,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 22:09:23,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 22:09:23,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 22:09:23,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 22:09:23,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 22:09:23,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 22:09:23,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:09:23,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:09:23,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:09:23,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:09:23,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:09:23,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:09:23,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:09:23,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:09:23,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:09:23,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:09:23,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:09:23,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:09:23,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:09:23,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:09:23,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:09:23,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:09:23,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:09:23,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:09:23,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:09:23,597 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:09:23,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:09:23,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:09:23,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:09:23,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:09:23,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:09:23,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:09:23,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:09:23,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:09:23,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:09:24,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:09:24,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:09:24,004 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:09:24,006 INFO L432 ainManager$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+lhb-reducer.c [2020-10-23 22:09:24,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e971fe3f5/3381434caa5d45b68d831633a527138f/FLAG663227205 [2020-10-23 22:09:24,819 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:09:24,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-23 22:09:24,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e971fe3f5/3381434caa5d45b68d831633a527138f/FLAG663227205 [2020-10-23 22:09:25,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e971fe3f5/3381434caa5d45b68d831633a527138f [2020-10-23 22:09:25,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:09:25,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:09:25,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:09:25,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:09:25,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:09:25,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:09:25" (1/1) ... [2020-10-23 22:09:25,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b157d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:25, skipping insertion in model container [2020-10-23 22:09:25,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:09:25" (1/1) ... [2020-10-23 22:09:25,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:09:25,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:09:25,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:09:25,736 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:09:26,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:09:26,169 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:09:26,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:26 WrapperNode [2020-10-23 22:09:26,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:09:26,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:09:26,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:09:26,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:09:26,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:26" (1/1) ... [2020-10-23 22:09:26,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:26" (1/1) ... [2020-10-23 22:09:26,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:26" (1/1) ... [2020-10-23 22:09:26,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:26" (1/1) ... [2020-10-23 22:09:26,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:26" (1/1) ... [2020-10-23 22:09:26,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:26" (1/1) ... [2020-10-23 22:09:26,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:26" (1/1) ... [2020-10-23 22:09:26,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:09:26,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:09:26,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:09:26,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:09:26,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:26" (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 [2020-10-23 22:09:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:09:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:09:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:09:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:09:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:09:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:09:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:09:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:09:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:09:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-23 22:09:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-23 22:09:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-23 22:09:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:09:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-23 22:09:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-23 22:09:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-23 22:09:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-23 22:09:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-23 22:09:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-23 22:09:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-23 22:09:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:09:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:09:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:09:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:09:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:09:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:09:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:09:29,112 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:09:29,115 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 22:09:29,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:09:29 BoogieIcfgContainer [2020-10-23 22:09:29,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:09:29,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:09:29,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:09:29,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:09:29,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:09:25" (1/3) ... [2020-10-23 22:09:29,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b493926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:09:29, skipping insertion in model container [2020-10-23 22:09:29,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:26" (2/3) ... [2020-10-23 22:09:29,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b493926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:09:29, skipping insertion in model container [2020-10-23 22:09:29,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:09:29" (3/3) ... [2020-10-23 22:09:29,129 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-23 22:09:29,142 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:09:29,149 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:09:29,164 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:09:29,191 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:09:29,192 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:09:29,192 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:09:29,192 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:09:29,192 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:09:29,192 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:09:29,192 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:09:29,193 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:09:29,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states. [2020-10-23 22:09:29,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-23 22:09:29,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:29,282 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] [2020-10-23 22:09:29,282 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:29,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:29,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1164331303, now seen corresponding path program 1 times [2020-10-23 22:09:29,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:29,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053601682] [2020-10-23 22:09:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:29,401 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:30,788 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:09:30,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:31,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:31,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053601682] [2020-10-23 22:09:31,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:31,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:09:31,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54008207] [2020-10-23 22:09:31,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:09:31,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:31,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:09:31,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:09:31,262 INFO L87 Difference]: Start difference. First operand 1134 states. Second operand 4 states. [2020-10-23 22:09:35,739 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-23 22:09:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:36,720 INFO L93 Difference]: Finished difference Result 1841 states and 2375 transitions. [2020-10-23 22:09:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:09:36,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 432 [2020-10-23 22:09:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:36,757 INFO L225 Difference]: With dead ends: 1841 [2020-10-23 22:09:36,758 INFO L226 Difference]: Without dead ends: 1309 [2020-10-23 22:09:36,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:09:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2020-10-23 22:09:36,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1301. [2020-10-23 22:09:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-10-23 22:09:36,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1554 transitions. [2020-10-23 22:09:36,941 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1554 transitions. Word has length 432 [2020-10-23 22:09:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:36,947 INFO L481 AbstractCegarLoop]: Abstraction has 1301 states and 1554 transitions. [2020-10-23 22:09:36,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:09:36,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1554 transitions. [2020-10-23 22:09:36,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-23 22:09:36,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:36,962 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] [2020-10-23 22:09:36,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:09:36,963 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:36,965 INFO L82 PathProgramCache]: Analyzing trace with hash -674942744, now seen corresponding path program 1 times [2020-10-23 22:09:36,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:36,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533729800] [2020-10-23 22:09:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:36,978 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:37,644 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:09:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:37,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533729800] [2020-10-23 22:09:37,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:37,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:09:37,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367739356] [2020-10-23 22:09:37,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:09:37,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:37,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:09:37,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:09:37,962 INFO L87 Difference]: Start difference. First operand 1301 states and 1554 transitions. Second operand 4 states. [2020-10-23 22:09:41,337 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-23 22:09:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:42,853 INFO L93 Difference]: Finished difference Result 2366 states and 2920 transitions. [2020-10-23 22:09:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:09:42,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 432 [2020-10-23 22:09:42,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:42,870 INFO L225 Difference]: With dead ends: 2366 [2020-10-23 22:09:42,870 INFO L226 Difference]: Without dead ends: 1926 [2020-10-23 22:09:42,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:09:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2020-10-23 22:09:42,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1913. [2020-10-23 22:09:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1913 states. [2020-10-23 22:09:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2338 transitions. [2020-10-23 22:09:42,983 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2338 transitions. Word has length 432 [2020-10-23 22:09:42,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:42,984 INFO L481 AbstractCegarLoop]: Abstraction has 1913 states and 2338 transitions. [2020-10-23 22:09:42,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:09:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2338 transitions. [2020-10-23 22:09:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-23 22:09:42,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:42,995 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] [2020-10-23 22:09:42,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:09:42,997 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:42,998 INFO L82 PathProgramCache]: Analyzing trace with hash -208040197, now seen corresponding path program 1 times [2020-10-23 22:09:42,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:43,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799978708] [2020-10-23 22:09:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:43,009 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:43,632 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:09:43,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:43,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799978708] [2020-10-23 22:09:43,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:43,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:09:43,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147463260] [2020-10-23 22:09:43,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:09:43,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:43,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:09:43,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:09:43,884 INFO L87 Difference]: Start difference. First operand 1913 states and 2338 transitions. Second operand 4 states. [2020-10-23 22:09:47,217 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-23 22:09:48,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:48,748 INFO L93 Difference]: Finished difference Result 3844 states and 4843 transitions. [2020-10-23 22:09:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:09:48,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 432 [2020-10-23 22:09:48,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:48,770 INFO L225 Difference]: With dead ends: 3844 [2020-10-23 22:09:48,771 INFO L226 Difference]: Without dead ends: 3156 [2020-10-23 22:09:48,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:09:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2020-10-23 22:09:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 3133. [2020-10-23 22:09:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3133 states. [2020-10-23 22:09:48,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 3902 transitions. [2020-10-23 22:09:48,937 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 3902 transitions. Word has length 432 [2020-10-23 22:09:48,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:48,938 INFO L481 AbstractCegarLoop]: Abstraction has 3133 states and 3902 transitions. [2020-10-23 22:09:48,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:09:48,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 3902 transitions. [2020-10-23 22:09:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-23 22:09:48,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:48,951 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] [2020-10-23 22:09:48,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:09:48,952 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:48,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:48,953 INFO L82 PathProgramCache]: Analyzing trace with hash 89153498, now seen corresponding path program 1 times [2020-10-23 22:09:48,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:48,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145207737] [2020-10-23 22:09:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:48,957 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:49,656 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:09:49,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:49,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145207737] [2020-10-23 22:09:49,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:49,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:09:49,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775362160] [2020-10-23 22:09:49,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:09:49,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:49,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:09:49,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:09:49,908 INFO L87 Difference]: Start difference. First operand 3133 states and 3902 transitions. Second operand 5 states. [2020-10-23 22:09:55,380 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-23 22:09:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:57,246 INFO L93 Difference]: Finished difference Result 8844 states and 11085 transitions. [2020-10-23 22:09:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:09:57,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 432 [2020-10-23 22:09:57,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:57,275 INFO L225 Difference]: With dead ends: 8844 [2020-10-23 22:09:57,276 INFO L226 Difference]: Without dead ends: 5902 [2020-10-23 22:09:57,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:09:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5902 states. [2020-10-23 22:09:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5902 to 5761. [2020-10-23 22:09:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-10-23 22:09:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 7194 transitions. [2020-10-23 22:09:57,660 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 7194 transitions. Word has length 432 [2020-10-23 22:09:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:57,660 INFO L481 AbstractCegarLoop]: Abstraction has 5761 states and 7194 transitions. [2020-10-23 22:09:57,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:09:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 7194 transitions. [2020-10-23 22:09:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-23 22:09:57,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:57,678 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] [2020-10-23 22:09:57,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:09:57,679 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:57,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1177516810, now seen corresponding path program 1 times [2020-10-23 22:09:57,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:57,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140973045] [2020-10-23 22:09:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:57,684 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:58,172 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:09:58,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:58,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140973045] [2020-10-23 22:09:58,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:58,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:09:58,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126398218] [2020-10-23 22:09:58,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:09:58,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:58,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:09:58,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:09:58,367 INFO L87 Difference]: Start difference. First operand 5761 states and 7194 transitions. Second operand 4 states. [2020-10-23 22:10:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:05,658 INFO L93 Difference]: Finished difference Result 16862 states and 21138 transitions. [2020-10-23 22:10:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 22:10:05,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 433 [2020-10-23 22:10:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:05,712 INFO L225 Difference]: With dead ends: 16862 [2020-10-23 22:10:05,712 INFO L226 Difference]: Without dead ends: 11326 [2020-10-23 22:10:05,726 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 [2020-10-23 22:10:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11326 states. [2020-10-23 22:10:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11326 to 5763. [2020-10-23 22:10:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5763 states. [2020-10-23 22:10:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5763 states to 5763 states and 7196 transitions. [2020-10-23 22:10:06,237 INFO L78 Accepts]: Start accepts. Automaton has 5763 states and 7196 transitions. Word has length 433 [2020-10-23 22:10:06,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:06,239 INFO L481 AbstractCegarLoop]: Abstraction has 5763 states and 7196 transitions. [2020-10-23 22:10:06,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:10:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5763 states and 7196 transitions. [2020-10-23 22:10:06,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-23 22:10:06,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:06,251 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] [2020-10-23 22:10:06,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:10:06,251 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:06,252 INFO L82 PathProgramCache]: Analyzing trace with hash 626711735, now seen corresponding path program 1 times [2020-10-23 22:10:06,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:06,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094930335] [2020-10-23 22:10:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:06,262 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:06,862 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:10:06,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:07,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094930335] [2020-10-23 22:10:07,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:07,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:10:07,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140642653] [2020-10-23 22:10:07,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:10:07,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:07,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:10:07,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:10:07,092 INFO L87 Difference]: Start difference. First operand 5763 states and 7196 transitions. Second operand 4 states. [2020-10-23 22:10:12,698 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-23 22:10:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:14,564 INFO L93 Difference]: Finished difference Result 15137 states and 18947 transitions. [2020-10-23 22:10:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:10:14,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 434 [2020-10-23 22:10:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:14,603 INFO L225 Difference]: With dead ends: 15137 [2020-10-23 22:10:14,603 INFO L226 Difference]: Without dead ends: 9808 [2020-10-23 22:10:14,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:10:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9808 states. [2020-10-23 22:10:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9808 to 9667. [2020-10-23 22:10:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9667 states. [2020-10-23 22:10:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9667 states to 9667 states and 12027 transitions. [2020-10-23 22:10:15,590 INFO L78 Accepts]: Start accepts. Automaton has 9667 states and 12027 transitions. Word has length 434 [2020-10-23 22:10:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:15,591 INFO L481 AbstractCegarLoop]: Abstraction has 9667 states and 12027 transitions. [2020-10-23 22:10:15,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:10:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 9667 states and 12027 transitions. [2020-10-23 22:10:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-23 22:10:15,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:15,608 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] [2020-10-23 22:10:15,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 22:10:15,608 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:15,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1373547575, now seen corresponding path program 1 times [2020-10-23 22:10:15,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:15,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371922496] [2020-10-23 22:10:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:15,613 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:16,315 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:10:16,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:16,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371922496] [2020-10-23 22:10:16,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:16,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:10:16,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334965519] [2020-10-23 22:10:16,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:10:16,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:16,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:10:16,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:10:16,565 INFO L87 Difference]: Start difference. First operand 9667 states and 12027 transitions. Second operand 5 states. [2020-10-23 22:10:22,663 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-23 22:10:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:25,045 INFO L93 Difference]: Finished difference Result 27700 states and 34493 transitions. [2020-10-23 22:10:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:10:25,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 434 [2020-10-23 22:10:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:25,089 INFO L225 Difference]: With dead ends: 27700 [2020-10-23 22:10:25,089 INFO L226 Difference]: Without dead ends: 18229 [2020-10-23 22:10:25,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:10:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18229 states. [2020-10-23 22:10:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18229 to 18109. [2020-10-23 22:10:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18109 states. [2020-10-23 22:10:26,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18109 states to 18109 states and 22415 transitions. [2020-10-23 22:10:26,863 INFO L78 Accepts]: Start accepts. Automaton has 18109 states and 22415 transitions. Word has length 434 [2020-10-23 22:10:26,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:26,864 INFO L481 AbstractCegarLoop]: Abstraction has 18109 states and 22415 transitions. [2020-10-23 22:10:26,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:10:26,864 INFO L276 IsEmpty]: Start isEmpty. Operand 18109 states and 22415 transitions. [2020-10-23 22:10:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-23 22:10:26,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:26,896 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] [2020-10-23 22:10:26,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 22:10:26,897 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:26,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:26,898 INFO L82 PathProgramCache]: Analyzing trace with hash -405235554, now seen corresponding path program 1 times [2020-10-23 22:10:26,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:26,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433662444] [2020-10-23 22:10:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:26,902 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:27,479 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:10:27,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:27,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433662444] [2020-10-23 22:10:27,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:27,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:10:27,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513915104] [2020-10-23 22:10:27,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:10:27,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:27,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:10:27,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:10:27,698 INFO L87 Difference]: Start difference. First operand 18109 states and 22415 transitions. Second operand 5 states. [2020-10-23 22:10:34,380 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-23 22:10:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:36,623 INFO L93 Difference]: Finished difference Result 52626 states and 65116 transitions. [2020-10-23 22:10:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:10:36,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 434 [2020-10-23 22:10:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:36,695 INFO L225 Difference]: With dead ends: 52626 [2020-10-23 22:10:36,695 INFO L226 Difference]: Without dead ends: 34788 [2020-10-23 22:10:36,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:10:36,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34788 states. [2020-10-23 22:10:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34788 to 34633. [2020-10-23 22:10:39,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34633 states. [2020-10-23 22:10:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34633 states to 34633 states and 42594 transitions. [2020-10-23 22:10:39,903 INFO L78 Accepts]: Start accepts. Automaton has 34633 states and 42594 transitions. Word has length 434 [2020-10-23 22:10:39,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:39,903 INFO L481 AbstractCegarLoop]: Abstraction has 34633 states and 42594 transitions. [2020-10-23 22:10:39,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:10:39,903 INFO L276 IsEmpty]: Start isEmpty. Operand 34633 states and 42594 transitions. [2020-10-23 22:10:39,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-23 22:10:39,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:39,951 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] [2020-10-23 22:10:39,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 22:10:39,951 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:39,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:39,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1112545506, now seen corresponding path program 1 times [2020-10-23 22:10:39,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:39,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670695329] [2020-10-23 22:10:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:39,956 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:40,446 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:10:40,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:40,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670695329] [2020-10-23 22:10:40,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:40,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:10:40,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031206304] [2020-10-23 22:10:40,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:10:40,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:40,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:10:40,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:10:40,615 INFO L87 Difference]: Start difference. First operand 34633 states and 42594 transitions. Second operand 4 states. [2020-10-23 22:10:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:53,790 INFO L93 Difference]: Finished difference Result 103290 states and 127093 transitions. [2020-10-23 22:10:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 22:10:53,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 435 [2020-10-23 22:10:53,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:53,942 INFO L225 Difference]: With dead ends: 103290 [2020-10-23 22:10:53,943 INFO L226 Difference]: Without dead ends: 68978 [2020-10-23 22:10:54,031 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 [2020-10-23 22:10:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68978 states. [2020-10-23 22:10:58,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68978 to 34643. [2020-10-23 22:10:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34643 states. [2020-10-23 22:10:58,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34643 states to 34643 states and 42604 transitions. [2020-10-23 22:10:58,411 INFO L78 Accepts]: Start accepts. Automaton has 34643 states and 42604 transitions. Word has length 435 [2020-10-23 22:10:58,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:58,411 INFO L481 AbstractCegarLoop]: Abstraction has 34643 states and 42604 transitions. [2020-10-23 22:10:58,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:10:58,411 INFO L276 IsEmpty]: Start isEmpty. Operand 34643 states and 42604 transitions. [2020-10-23 22:10:58,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-23 22:10:58,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:58,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:10:58,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 22:10:58,447 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:58,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:58,447 INFO L82 PathProgramCache]: Analyzing trace with hash -25734853, now seen corresponding path program 1 times [2020-10-23 22:10:58,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:58,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482729246] [2020-10-23 22:10:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:58,451 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:58,959 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:10:58,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:59,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482729246] [2020-10-23 22:10:59,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:59,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:10:59,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506138106] [2020-10-23 22:10:59,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:10:59,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:59,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:10:59,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:10:59,178 INFO L87 Difference]: Start difference. First operand 34643 states and 42604 transitions. Second operand 4 states. [2020-10-23 22:11:08,438 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-23 22:11:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:11:12,884 INFO L93 Difference]: Finished difference Result 92019 states and 112999 transitions. [2020-10-23 22:11:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:11:12,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 436 [2020-10-23 22:11:12,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:11:12,979 INFO L225 Difference]: With dead ends: 92019 [2020-10-23 22:11:12,979 INFO L226 Difference]: Without dead ends: 58724 [2020-10-23 22:11:13,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:11:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58724 states. [2020-10-23 22:11:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58724 to 58569. [2020-10-23 22:11:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58569 states. [2020-10-23 22:11:19,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58569 states to 58569 states and 71313 transitions. [2020-10-23 22:11:19,232 INFO L78 Accepts]: Start accepts. Automaton has 58569 states and 71313 transitions. Word has length 436 [2020-10-23 22:11:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:11:19,232 INFO L481 AbstractCegarLoop]: Abstraction has 58569 states and 71313 transitions. [2020-10-23 22:11:19,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:11:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 58569 states and 71313 transitions. [2020-10-23 22:11:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-23 22:11:19,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:11:19,269 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] [2020-10-23 22:11:19,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 22:11:19,269 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:11:19,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:11:19,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1880309573, now seen corresponding path program 1 times [2020-10-23 22:11:19,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:11:19,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201541192] [2020-10-23 22:11:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:11:19,274 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:11:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:11:19,821 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:11:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:11:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:11:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:11:20,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201541192] [2020-10-23 22:11:20,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:11:20,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:11:20,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410322983] [2020-10-23 22:11:20,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:11:20,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:11:20,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:11:20,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:11:20,242 INFO L87 Difference]: Start difference. First operand 58569 states and 71313 transitions. Second operand 5 states. [2020-10-23 22:11:32,424 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-23 22:11:39,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:11:39,078 INFO L93 Difference]: Finished difference Result 156599 states and 190211 transitions. [2020-10-23 22:11:39,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:11:39,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 436 [2020-10-23 22:11:39,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:11:39,290 INFO L225 Difference]: With dead ends: 156599 [2020-10-23 22:11:39,290 INFO L226 Difference]: Without dead ends: 98327 [2020-10-23 22:11:39,386 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 [2020-10-23 22:11:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98327 states. [2020-10-23 22:11:50,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98327 to 98216. [2020-10-23 22:11:50,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98216 states. [2020-10-23 22:11:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98216 states to 98216 states and 118223 transitions. [2020-10-23 22:11:51,176 INFO L78 Accepts]: Start accepts. Automaton has 98216 states and 118223 transitions. Word has length 436 [2020-10-23 22:11:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:11:51,177 INFO L481 AbstractCegarLoop]: Abstraction has 98216 states and 118223 transitions. [2020-10-23 22:11:51,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:11:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 98216 states and 118223 transitions. [2020-10-23 22:11:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-23 22:11:51,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:11:51,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:11:51,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 22:11:51,262 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:11:51,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:11:51,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1865504778, now seen corresponding path program 1 times [2020-10-23 22:11:51,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:11:51,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216106001] [2020-10-23 22:11:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:11:51,268 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:11:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:11:52,135 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:11:52,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:11:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:11:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:11:52,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216106001] [2020-10-23 22:11:52,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:11:52,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:11:52,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343058839] [2020-10-23 22:11:52,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:11:52,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:11:52,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:11:52,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:11:52,599 INFO L87 Difference]: Start difference. First operand 98216 states and 118223 transitions. Second operand 5 states. [2020-10-23 22:12:06,311 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-23 22:12:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:12:13,693 INFO L93 Difference]: Finished difference Result 196935 states and 236989 transitions. [2020-10-23 22:12:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:12:13,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 436 [2020-10-23 22:12:13,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:12:13,858 INFO L225 Difference]: With dead ends: 196935 [2020-10-23 22:12:13,859 INFO L226 Difference]: Without dead ends: 99497 [2020-10-23 22:12:13,983 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 [2020-10-23 22:12:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99497 states. [2020-10-23 22:12:26,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99497 to 98778. [2020-10-23 22:12:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98778 states. [2020-10-23 22:12:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98778 states to 98778 states and 118832 transitions. [2020-10-23 22:12:26,657 INFO L78 Accepts]: Start accepts. Automaton has 98778 states and 118832 transitions. Word has length 436 [2020-10-23 22:12:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:12:26,657 INFO L481 AbstractCegarLoop]: Abstraction has 98778 states and 118832 transitions. [2020-10-23 22:12:26,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:12:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 98778 states and 118832 transitions. [2020-10-23 22:12:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-23 22:12:26,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:12:26,716 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] [2020-10-23 22:12:26,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-23 22:12:26,716 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:12:26,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:12:26,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1315989918, now seen corresponding path program 1 times [2020-10-23 22:12:26,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:12:26,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221324525] [2020-10-23 22:12:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:12:26,720 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:12:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:12:27,457 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:12:27,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:12:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:12:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:12:27,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221324525] [2020-10-23 22:12:27,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:12:27,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:12:27,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342023909] [2020-10-23 22:12:27,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:12:27,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:12:27,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:12:27,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:12:27,687 INFO L87 Difference]: Start difference. First operand 98778 states and 118832 transitions. Second operand 4 states. [2020-10-23 22:13:00,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:13:00,436 INFO L93 Difference]: Finished difference Result 293234 states and 352957 transitions. [2020-10-23 22:13:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 22:13:00,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 437 [2020-10-23 22:13:00,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:13:00,908 INFO L225 Difference]: With dead ends: 293234 [2020-10-23 22:13:00,909 INFO L226 Difference]: Without dead ends: 196721 [2020-10-23 22:13:01,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:13:01,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196721 states. [2020-10-23 22:13:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196721 to 98818. [2020-10-23 22:13:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98818 states. [2020-10-23 22:13:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98818 states to 98818 states and 118872 transitions. [2020-10-23 22:13:15,640 INFO L78 Accepts]: Start accepts. Automaton has 98818 states and 118872 transitions. Word has length 437 [2020-10-23 22:13:15,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:13:15,640 INFO L481 AbstractCegarLoop]: Abstraction has 98818 states and 118872 transitions. [2020-10-23 22:13:15,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:13:15,640 INFO L276 IsEmpty]: Start isEmpty. Operand 98818 states and 118872 transitions. [2020-10-23 22:13:15,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-23 22:13:15,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:13:15,698 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] [2020-10-23 22:13:15,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-23 22:13:15,699 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:13:15,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:13:15,699 INFO L82 PathProgramCache]: Analyzing trace with hash -707452441, now seen corresponding path program 1 times [2020-10-23 22:13:15,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:13:15,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433557538] [2020-10-23 22:13:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:13:15,702 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:13:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:13:16,529 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-23 22:13:16,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:13:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:13:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:13:16,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433557538] [2020-10-23 22:13:16,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:13:16,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:13:16,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441125202] [2020-10-23 22:13:16,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:13:16,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:13:16,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:13:16,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:13:16,802 INFO L87 Difference]: Start difference. First operand 98818 states and 118872 transitions. Second operand 5 states. [2020-10-23 22:13:31,346 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-23 22:13:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:13:38,978 INFO L93 Difference]: Finished difference Result 199180 states and 239439 transitions. [2020-10-23 22:13:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:13:38,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 438 [2020-10-23 22:13:38,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:13:39,121 INFO L225 Difference]: With dead ends: 199180 [2020-10-23 22:13:39,121 INFO L226 Difference]: Without dead ends: 101003 [2020-10-23 22:13:39,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:13:39,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101003 states. [2020-10-23 22:13:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101003 to 99986. [2020-10-23 22:13:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99986 states. [2020-10-23 22:13:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99986 states to 99986 states and 120114 transitions. [2020-10-23 22:13:54,014 INFO L78 Accepts]: Start accepts. Automaton has 99986 states and 120114 transitions. Word has length 438 [2020-10-23 22:13:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:13:54,015 INFO L481 AbstractCegarLoop]: Abstraction has 99986 states and 120114 transitions. [2020-10-23 22:13:54,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:13:54,015 INFO L276 IsEmpty]: Start isEmpty. Operand 99986 states and 120114 transitions. [2020-10-23 22:13:54,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-23 22:13:54,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:13:54,075 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] [2020-10-23 22:13:54,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-23 22:13:54,075 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:13:54,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:13:54,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1699672034, now seen corresponding path program 1 times [2020-10-23 22:13:54,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:13:54,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519349153] [2020-10-23 22:13:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:13:54,079 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:13:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 22:13:54,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 22:13:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 22:13:54,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 22:13:55,164 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 22:13:55,165 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 22:13:55,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-23 22:13:55,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:13:55 BoogieIcfgContainer [2020-10-23 22:13:55,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:13:55,226 INFO L168 Benchmark]: Toolchain (without parser) took 270154.20 ms. Allocated memory was 151.0 MB in the beginning and 7.6 GB in the end (delta: 7.4 GB). Free memory was 126.2 MB in the beginning and 4.7 GB in the end (delta: -4.5 GB). Peak memory consumption was 2.9 GB. Max. memory is 8.0 GB. [2020-10-23 22:13:55,227 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:13:55,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1089.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 127.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. [2020-10-23 22:13:55,228 INFO L168 Benchmark]: Boogie Preprocessor took 192.51 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 121.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-23 22:13:55,229 INFO L168 Benchmark]: RCFGBuilder took 2754.94 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 121.8 MB in the beginning and 103.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 69.7 MB. Max. memory is 8.0 GB. [2020-10-23 22:13:55,230 INFO L168 Benchmark]: TraceAbstraction took 266103.18 ms. Allocated memory was 200.3 MB in the beginning and 7.6 GB in the end (delta: 7.4 GB). Free memory was 103.0 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 2.8 GB. Max. memory is 8.0 GB. [2020-10-23 22:13:55,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1089.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 127.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 192.51 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 121.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2754.94 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 121.8 MB in the beginning and 103.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 69.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 266103.18 ms. Allocated memory was 200.3 MB in the beginning and 7.6 GB in the end (delta: 7.4 GB). Free memory was 103.0 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 2.8 GB. 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] 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_2801; [L74] int __return_2770; [L75] int __return_2712; [L76] int __return_2678; [L77] int __tmp_2199_0; [L78] int __return_2307; [L79] int __return_2212; [L80] int __return_2575; [L81] int __return_2541; [L82] int __return_2462; [L83] int __return_2198; [L86] int main__c1; [L87] int main__i2; [L88] main__c1 = 0 [L89] ep12 = __VERIFIER_nondet_bool() [L90] ep13 = __VERIFIER_nondet_bool() [L91] ep21 = __VERIFIER_nondet_bool() [L92] ep23 = __VERIFIER_nondet_bool() [L93] ep31 = __VERIFIER_nondet_bool() [L94] ep32 = __VERIFIER_nondet_bool() [L95] id1 = __VERIFIER_nondet_char() [L96] r1 = __VERIFIER_nondet_char() [L97] st1 = __VERIFIER_nondet_char() [L98] nl1 = __VERIFIER_nondet_char() [L99] m1 = __VERIFIER_nondet_char() [L100] max1 = __VERIFIER_nondet_char() [L101] mode1 = __VERIFIER_nondet_bool() [L102] id2 = __VERIFIER_nondet_char() [L103] r2 = __VERIFIER_nondet_char() [L104] st2 = __VERIFIER_nondet_char() [L105] nl2 = __VERIFIER_nondet_char() [L106] m2 = __VERIFIER_nondet_char() [L107] max2 = __VERIFIER_nondet_char() [L108] mode2 = __VERIFIER_nondet_bool() [L109] id3 = __VERIFIER_nondet_char() [L110] r3 = __VERIFIER_nondet_char() [L111] st3 = __VERIFIER_nondet_char() [L112] nl3 = __VERIFIER_nondet_char() [L113] m3 = __VERIFIER_nondet_char() [L114] max3 = __VERIFIER_nondet_char() [L115] mode3 = __VERIFIER_nondet_bool() [L117] _Bool init__r121; [L118] _Bool init__r131; [L119] _Bool init__r211; [L120] _Bool init__r231; [L121] _Bool init__r311; [L122] _Bool init__r321; [L123] _Bool init__r122; [L124] int init__tmp; [L125] _Bool init__r132; [L126] int init__tmp___0; [L127] _Bool init__r212; [L128] int init__tmp___1; [L129] _Bool init__r232; [L130] int init__tmp___2; [L131] _Bool init__r312; [L132] int init__tmp___3; [L133] _Bool init__r322; [L134] int init__tmp___4; [L135] int init__tmp___5; [L136] init__r121 = ep12 [L137] init__r131 = ep13 [L138] init__r211 = ep21 [L139] init__r231 = ep23 [L140] init__r311 = ep31 [L141] init__r321 = ep32 [L142] COND FALSE !(!(init__r121 == 0)) [L2912] COND FALSE !(!(init__r131 == 0)) [L2928] init__tmp = 0 [L146] init__r122 = (_Bool)init__tmp [L147] COND FALSE !(!(init__r131 == 0)) [L2889] COND FALSE !(!(init__r121 == 0)) [L2905] init__tmp___0 = 0 [L151] init__r132 = (_Bool)init__tmp___0 [L152] COND FALSE !(!(init__r211 == 0)) [L2866] COND FALSE !(!(init__r231 == 0)) [L2882] init__tmp___1 = 0 [L156] init__r212 = (_Bool)init__tmp___1 [L157] COND FALSE !(!(init__r231 == 0)) [L2843] COND FALSE !(!(init__r211 == 0)) [L2859] init__tmp___2 = 0 [L161] init__r232 = (_Bool)init__tmp___2 [L162] COND FALSE !(!(init__r311 == 0)) [L2820] COND FALSE !(!(init__r321 == 0)) [L2836] init__tmp___3 = 0 [L166] init__r312 = (_Bool)init__tmp___3 [L167] COND FALSE !(!(init__r321 == 0)) [L2797] COND FALSE !(!(init__r311 == 0)) [L2813] init__tmp___4 = 0 [L171] init__r322 = (_Bool)init__tmp___4 [L172] COND TRUE ((int)id1) != ((int)id2) [L174] COND TRUE ((int)id1) != ((int)id3) [L176] COND TRUE ((int)id2) != ((int)id3) [L178] COND TRUE ((int)id1) >= 0 [L180] COND TRUE ((int)id2) >= 0 [L182] COND TRUE ((int)id3) >= 0 [L184] COND TRUE ((int)r1) == 0 [L186] COND TRUE ((int)r2) == 0 [L188] COND TRUE ((int)r3) == 0 [L190] COND TRUE ((int)max1) == ((int)id1) [L192] COND TRUE ((int)max2) == ((int)id2) [L194] COND TRUE ((int)max3) == ((int)id3) [L196] COND TRUE ((int)st1) == 0 [L198] COND TRUE ((int)st2) == 0 [L200] COND TRUE ((int)st3) == 0 [L202] COND TRUE ((int)nl1) == 0 [L204] COND TRUE ((int)nl2) == 0 [L206] COND TRUE ((int)nl3) == 0 [L208] COND TRUE ((int)mode1) == 0 [L210] COND TRUE ((int)mode2) == 0 [L212] COND TRUE ((int)mode3) == 0 [L214] init__tmp___5 = 1 [L215] __return_1708 = init__tmp___5 [L216] main__i2 = __return_1708 [L217] COND TRUE main__i2 != 0 [L219] p12_old = nomsg [L220] p12_new = nomsg [L221] p13_old = nomsg [L222] p13_new = nomsg [L223] p21_old = nomsg [L224] p21_new = nomsg [L225] p23_old = nomsg [L226] p23_new = nomsg [L227] p31_old = nomsg [L228] p31_new = nomsg [L229] p32_old = nomsg [L230] p32_new = nomsg [L231] main__i2 = 0 [L232] COND TRUE main__i2 < 6 [L235] COND FALSE !(!(mode1 == 0)) [L241] COND TRUE ((int)r1) < 2 [L243] COND FALSE !(!(ep12 == 0)) [L254] COND FALSE !(!(ep13 == 0)) [L265] mode1 = 1 [L267] COND FALSE !(!(mode2 == 0)) [L273] COND TRUE ((int)r2) < 2 [L275] COND FALSE !(!(ep21 == 0)) [L286] COND FALSE !(!(ep23 == 0)) [L297] mode2 = 1 [L299] COND FALSE !(!(mode3 == 0)) [L305] COND TRUE ((int)r3) < 2 [L307] COND FALSE !(!(ep31 == 0)) [L318] COND FALSE !(!(ep32 == 0)) [L329] mode3 = 1 [L330] p12_old = p12_new [L331] p12_new = nomsg [L332] p13_old = p13_new [L333] p13_new = nomsg [L334] p21_old = p21_new [L335] p21_new = nomsg [L336] p23_old = p23_new [L337] p23_new = nomsg [L338] p31_old = p31_new [L339] p31_new = nomsg [L340] p32_old = p32_new [L341] p32_new = nomsg [L343] int check__tmp; [L344] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L346] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L348] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L350] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L352] COND FALSE !(((int)r1) >= 2) [L358] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L360] COND TRUE ((int)r1) < 2 [L362] COND FALSE !(((int)r1) >= 2) [L368] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L370] COND TRUE ((int)r1) < 2 [L372] check__tmp = 1 [L373] __return_1836 = check__tmp [L374] main__c1 = __return_1836 [L376] _Bool __tmp_1; [L377] __tmp_1 = main__c1 [L378] _Bool assert__arg; [L379] assert__arg = __tmp_1 [L380] COND FALSE !(assert__arg == 0) [L386] int main____CPAchecker_TMP_0 = main__i2; [L387] main__i2 = main__i2 + 1 [L388] COND TRUE main__i2 < 6 [L391] COND TRUE !(mode1 == 0) [L393] r1 = (char)(((int)r1) + 1) [L394] COND FALSE !(!(ep21 == 0)) [L402] COND FALSE !(!(ep31 == 0)) [L410] COND FALSE !(((int)r1) == 2) [L416] mode1 = 0 [L418] COND TRUE !(mode2 == 0) [L420] r2 = (char)(((int)r2) + 1) [L421] COND FALSE !(!(ep12 == 0)) [L429] COND FALSE !(!(ep32 == 0)) [L437] COND FALSE !(((int)r2) == 2) [L443] mode2 = 0 [L445] COND TRUE !(mode3 == 0) [L447] r3 = (char)(((int)r3) + 1) [L448] COND FALSE !(!(ep13 == 0)) [L456] COND FALSE !(!(ep23 == 0)) [L464] COND FALSE !(((int)r3) == 2) [L470] mode3 = 0 [L471] p12_old = p12_new [L472] p12_new = nomsg [L473] p13_old = p13_new [L474] p13_new = nomsg [L475] p21_old = p21_new [L476] p21_new = nomsg [L477] p23_old = p23_new [L478] p23_new = nomsg [L479] p31_old = p31_new [L480] p31_new = nomsg [L481] p32_old = p32_new [L482] p32_new = nomsg [L484] int check__tmp; [L485] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L487] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L489] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L491] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L493] COND FALSE !(((int)r1) >= 2) [L499] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L501] COND TRUE ((int)r1) < 2 [L503] COND FALSE !(((int)r1) >= 2) [L509] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L511] COND TRUE ((int)r1) < 2 [L513] check__tmp = 1 [L514] __return_1954 = check__tmp [L515] main__c1 = __return_1954 [L517] _Bool __tmp_2; [L518] __tmp_2 = main__c1 [L519] _Bool assert__arg; [L520] assert__arg = __tmp_2 [L521] COND FALSE !(assert__arg == 0) [L527] int main____CPAchecker_TMP_0 = main__i2; [L528] main__i2 = main__i2 + 1 [L529] COND TRUE main__i2 < 6 [L532] COND FALSE !(!(mode1 == 0)) [L538] COND TRUE ((int)r1) < 2 [L540] COND FALSE !(!(ep12 == 0)) [L551] COND FALSE !(!(ep13 == 0)) [L562] mode1 = 1 [L564] COND FALSE !(!(mode2 == 0)) [L570] COND TRUE ((int)r2) < 2 [L572] COND FALSE !(!(ep21 == 0)) [L583] COND FALSE !(!(ep23 == 0)) [L594] mode2 = 1 [L596] COND FALSE !(!(mode3 == 0)) [L602] COND TRUE ((int)r3) < 2 [L604] COND FALSE !(!(ep31 == 0)) [L615] COND FALSE !(!(ep32 == 0)) [L626] mode3 = 1 [L627] p12_old = p12_new [L628] p12_new = nomsg [L629] p13_old = p13_new [L630] p13_new = nomsg [L631] p21_old = p21_new [L632] p21_new = nomsg [L633] p23_old = p23_new [L634] p23_new = nomsg [L635] p31_old = p31_new [L636] p31_new = nomsg [L637] p32_old = p32_new [L638] p32_new = nomsg [L640] int check__tmp; [L641] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L643] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L645] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L647] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L649] COND FALSE !(((int)r1) >= 2) [L655] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L657] COND TRUE ((int)r1) < 2 [L659] COND FALSE !(((int)r1) >= 2) [L665] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L667] COND TRUE ((int)r1) < 2 [L669] check__tmp = 1 [L670] __return_2075 = check__tmp [L671] main__c1 = __return_2075 [L673] _Bool __tmp_3; [L674] __tmp_3 = main__c1 [L675] _Bool assert__arg; [L676] assert__arg = __tmp_3 [L677] COND FALSE !(assert__arg == 0) [L683] int main____CPAchecker_TMP_0 = main__i2; [L684] main__i2 = main__i2 + 1 [L685] COND TRUE main__i2 < 6 [L688] COND TRUE !(mode1 == 0) [L690] r1 = (char)(((int)r1) + 1) [L691] COND FALSE !(!(ep21 == 0)) [L699] COND FALSE !(!(ep31 == 0)) [L707] COND TRUE ((int)r1) == 2 [L709] COND TRUE ((int)max1) == ((int)id1) [L711] st1 = 1 [L712] mode1 = 0 [L714] COND TRUE !(mode2 == 0) [L716] r2 = (char)(((int)r2) + 1) [L717] COND FALSE !(!(ep12 == 0)) [L725] COND FALSE !(!(ep32 == 0)) [L733] COND TRUE ((int)r2) == 2 [L735] COND TRUE ((int)max2) == ((int)id2) [L737] st2 = 1 [L738] mode2 = 0 [L740] COND TRUE !(mode3 == 0) [L742] r3 = (char)(((int)r3) + 1) [L743] COND FALSE !(!(ep13 == 0)) [L751] COND FALSE !(!(ep23 == 0)) [L759] COND TRUE ((int)r3) == 2 [L761] COND TRUE ((int)max3) == ((int)id3) [L763] st3 = 1 [L764] mode3 = 0 [L765] p12_old = p12_new [L766] p12_new = nomsg [L767] p13_old = p13_new [L768] p13_new = nomsg [L769] p21_old = p21_new [L770] p21_new = nomsg [L771] p23_old = p23_new [L772] p23_new = nomsg [L773] p31_old = p31_new [L774] p31_new = nomsg [L775] p32_old = p32_new [L776] p32_new = nomsg [L778] int check__tmp; [L779] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L785] check__tmp = 0 [L786] __return_2801 = check__tmp [L787] main__c1 = __return_2801 [L789] _Bool __tmp_4; [L790] __tmp_4 = main__c1 [L791] _Bool assert__arg; [L792] assert__arg = __tmp_4 [L793] COND TRUE assert__arg == 0 [L795] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 1139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 265.9s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 178.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25228 SDtfs, 18813 SDslu, 15687 SDs, 0 SdLazy, 26026 SolverSat, 257 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99986occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 71.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 140404 StatesRemovedByMinimization, 14 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...