/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:45:47,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:45:47,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:45:47,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:45:47,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:45:47,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:45:47,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:45:47,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:45:47,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:45:47,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:45:47,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:45:47,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:45:47,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:45:47,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:45:47,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:45:47,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:45:47,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:45:47,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:45:47,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:45:47,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:45:47,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:45:47,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:45:47,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:45:47,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:45:47,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:45:47,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:45:47,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:45:47,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:45:47,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:45:47,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:45:47,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:45:47,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:45:47,853 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:45:47,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:45:47,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:45:47,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:45:47,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:45:47,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:45:47,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:45:47,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:45:47,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:45:47,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:45:47,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:45:47,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:45:47,856 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:45:47,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:45:47,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:45:47,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:45:47,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:45:47,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:45:47,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:45:47,858 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:45:48,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:45:48,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:45:48,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:45:48,299 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:45:48,299 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:45:48,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-21 21:45:48,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a45f13b41/8c003e78d915452bbbf685e65ba47298/FLAG5dec064f4 [2021-02-21 21:45:49,108 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:45:49,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-21 21:45:49,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a45f13b41/8c003e78d915452bbbf685e65ba47298/FLAG5dec064f4 [2021-02-21 21:45:49,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a45f13b41/8c003e78d915452bbbf685e65ba47298 [2021-02-21 21:45:49,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:45:49,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:45:49,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:45:49,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:45:49,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:45:49,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:45:49" (1/1) ... [2021-02-21 21:45:49,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba43586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:49, skipping insertion in model container [2021-02-21 21:45:49,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:45:49" (1/1) ... [2021-02-21 21:45:49,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:45:49,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:45:49,979 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15396,15409] [2021-02-21 21:45:50,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:45:50,135 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:45:50,348 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15396,15409] [2021-02-21 21:45:50,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:45:50,450 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:45:50,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:50 WrapperNode [2021-02-21 21:45:50,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:45:50,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:45:50,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:45:50,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:45:50,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:50" (1/1) ... [2021-02-21 21:45:50,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:50" (1/1) ... [2021-02-21 21:45:50,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:50" (1/1) ... [2021-02-21 21:45:50,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:50" (1/1) ... [2021-02-21 21:45:50,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:50" (1/1) ... [2021-02-21 21:45:50,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:50" (1/1) ... [2021-02-21 21:45:50,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:50" (1/1) ... [2021-02-21 21:45:50,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:45:50,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:45:50,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:45:50,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:45:50,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:45:50,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:45:50,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:45:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:45:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:45:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:45:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:45:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:45:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:45:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:45:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-21 21:45:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-21 21:45:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-21 21:45:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:45:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-21 21:45:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-21 21:45:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-21 21:45:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-21 21:45:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-21 21:45:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-21 21:45:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-21 21:45:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:45:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:45:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:45:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:45:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:45:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:45:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:45:52,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:45:52,500 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 21:45:52,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:45:52 BoogieIcfgContainer [2021-02-21 21:45:52,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:45:52,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:45:52,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:45:52,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:45:52,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:45:49" (1/3) ... [2021-02-21 21:45:52,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66032bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:45:52, skipping insertion in model container [2021-02-21 21:45:52,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:45:50" (2/3) ... [2021-02-21 21:45:52,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66032bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:45:52, skipping insertion in model container [2021-02-21 21:45:52,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:45:52" (3/3) ... [2021-02-21 21:45:52,514 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-21 21:45:52,521 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:45:52,527 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:45:52,549 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:45:52,575 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:45:52,575 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:45:52,575 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:45:52,575 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:45:52,576 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:45:52,576 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:45:52,576 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:45:52,576 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:45:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states. [2021-02-21 21:45:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-02-21 21:45:52,651 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:45:52,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:45:52,653 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:45:52,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:45:52,660 INFO L82 PathProgramCache]: Analyzing trace with hash 203862110, now seen corresponding path program 1 times [2021-02-21 21:45:52,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:45:52,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795989075] [2021-02-21 21:45:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:45:52,758 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:45:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:53,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:53,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:53,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:53,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:45:53,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:53,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:53,886 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:45:53,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:45:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:53,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:53,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:45:54,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795989075] [2021-02-21 21:45:54,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:45:54,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:45:54,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638317015] [2021-02-21 21:45:54,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:45:54,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:45:54,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:45:54,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:45:54,383 INFO L87 Difference]: Start difference. First operand 920 states. Second operand 4 states. [2021-02-21 21:45:57,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:45:57,993 INFO L93 Difference]: Finished difference Result 1627 states and 2113 transitions. [2021-02-21 21:45:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:45:57,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2021-02-21 21:45:57,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:45:58,030 INFO L225 Difference]: With dead ends: 1627 [2021-02-21 21:45:58,031 INFO L226 Difference]: Without dead ends: 1240 [2021-02-21 21:45:58,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:45:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-02-21 21:45:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1233. [2021-02-21 21:45:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1233 states. [2021-02-21 21:45:58,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1502 transitions. [2021-02-21 21:45:58,234 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1502 transitions. Word has length 468 [2021-02-21 21:45:58,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:45:58,239 INFO L480 AbstractCegarLoop]: Abstraction has 1233 states and 1502 transitions. [2021-02-21 21:45:58,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:45:58,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1502 transitions. [2021-02-21 21:45:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-02-21 21:45:58,248 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:45:58,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:45:58,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:45:58,249 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:45:58,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:45:58,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2139611678, now seen corresponding path program 1 times [2021-02-21 21:45:58,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:45:58,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336401143] [2021-02-21 21:45:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:45:58,256 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:45:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:58,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:58,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:58,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:58,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:45:58,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:58,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:58,901 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:45:58,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:45:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:58,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:58,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:45:59,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336401143] [2021-02-21 21:45:59,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:45:59,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:45:59,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028961042] [2021-02-21 21:45:59,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:45:59,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:45:59,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:45:59,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:45:59,195 INFO L87 Difference]: Start difference. First operand 1233 states and 1502 transitions. Second operand 4 states. [2021-02-21 21:46:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:01,981 INFO L93 Difference]: Finished difference Result 2417 states and 3031 transitions. [2021-02-21 21:46:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:01,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2021-02-21 21:46:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:01,994 INFO L225 Difference]: With dead ends: 2417 [2021-02-21 21:46:01,994 INFO L226 Difference]: Without dead ends: 2017 [2021-02-21 21:46:01,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2021-02-21 21:46:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2005. [2021-02-21 21:46:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2005 states. [2021-02-21 21:46:02,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 2484 transitions. [2021-02-21 21:46:02,116 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 2484 transitions. Word has length 468 [2021-02-21 21:46:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:02,117 INFO L480 AbstractCegarLoop]: Abstraction has 2005 states and 2484 transitions. [2021-02-21 21:46:02,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:46:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 2484 transitions. [2021-02-21 21:46:02,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-02-21 21:46:02,128 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:02,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:02,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:46:02,129 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:02,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:02,130 INFO L82 PathProgramCache]: Analyzing trace with hash 503531262, now seen corresponding path program 1 times [2021-02-21 21:46:02,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:02,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236543792] [2021-02-21 21:46:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:02,134 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:02,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:02,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:02,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:02,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:02,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:02,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:46:02,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:02,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:02,783 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:46:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:02,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:02,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:03,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236543792] [2021-02-21 21:46:03,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:03,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:46:03,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151656196] [2021-02-21 21:46:03,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:46:03,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:03,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:46:03,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:46:03,061 INFO L87 Difference]: Start difference. First operand 2005 states and 2484 transitions. Second operand 5 states. [2021-02-21 21:46:07,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:07,666 INFO L93 Difference]: Finished difference Result 5526 states and 6915 transitions. [2021-02-21 21:46:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:46:07,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 468 [2021-02-21 21:46:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:07,689 INFO L225 Difference]: With dead ends: 5526 [2021-02-21 21:46:07,690 INFO L226 Difference]: Without dead ends: 3714 [2021-02-21 21:46:07,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:46:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-02-21 21:46:07,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3712. [2021-02-21 21:46:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3712 states. [2021-02-21 21:46:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4609 transitions. [2021-02-21 21:46:07,948 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4609 transitions. Word has length 468 [2021-02-21 21:46:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:07,949 INFO L480 AbstractCegarLoop]: Abstraction has 3712 states and 4609 transitions. [2021-02-21 21:46:07,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:46:07,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4609 transitions. [2021-02-21 21:46:07,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-02-21 21:46:07,965 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:07,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:07,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:46:07,966 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:07,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:07,967 INFO L82 PathProgramCache]: Analyzing trace with hash 2073566048, now seen corresponding path program 1 times [2021-02-21 21:46:07,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:07,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413859735] [2021-02-21 21:46:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:07,976 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:08,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:08,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:08,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:08,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:46:08,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:08,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:08,442 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:46:08,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:08,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:08,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:08,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413859735] [2021-02-21 21:46:08,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:08,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:46:08,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503965712] [2021-02-21 21:46:08,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:46:08,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:08,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:46:08,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:08,643 INFO L87 Difference]: Start difference. First operand 3712 states and 4609 transitions. Second operand 4 states. [2021-02-21 21:46:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:13,610 INFO L93 Difference]: Finished difference Result 10713 states and 13380 transitions. [2021-02-21 21:46:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:13,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 469 [2021-02-21 21:46:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:13,646 INFO L225 Difference]: With dead ends: 10713 [2021-02-21 21:46:13,646 INFO L226 Difference]: Without dead ends: 7228 [2021-02-21 21:46:13,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7228 states. [2021-02-21 21:46:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7228 to 3714. [2021-02-21 21:46:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3714 states. [2021-02-21 21:46:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4611 transitions. [2021-02-21 21:46:13,975 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4611 transitions. Word has length 469 [2021-02-21 21:46:13,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:13,975 INFO L480 AbstractCegarLoop]: Abstraction has 3714 states and 4611 transitions. [2021-02-21 21:46:13,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:46:13,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4611 transitions. [2021-02-21 21:46:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-02-21 21:46:13,988 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:13,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:13,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:46:13,988 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:13,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:13,989 INFO L82 PathProgramCache]: Analyzing trace with hash 855425531, now seen corresponding path program 1 times [2021-02-21 21:46:13,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:13,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203016903] [2021-02-21 21:46:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:13,994 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:14,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:14,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:14,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:14,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:46:14,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:14,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:14,555 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:46:14,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:14,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:14,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:14,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203016903] [2021-02-21 21:46:14,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:14,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:46:14,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144476300] [2021-02-21 21:46:14,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:46:14,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:14,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:46:14,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:14,968 INFO L87 Difference]: Start difference. First operand 3714 states and 4611 transitions. Second operand 4 states. [2021-02-21 21:46:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:20,128 INFO L93 Difference]: Finished difference Result 9571 states and 11927 transitions. [2021-02-21 21:46:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:20,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 470 [2021-02-21 21:46:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:20,158 INFO L225 Difference]: With dead ends: 9571 [2021-02-21 21:46:20,158 INFO L226 Difference]: Without dead ends: 6322 [2021-02-21 21:46:20,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2021-02-21 21:46:20,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 6320. [2021-02-21 21:46:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6320 states. [2021-02-21 21:46:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6320 states to 6320 states and 7817 transitions. [2021-02-21 21:46:20,735 INFO L78 Accepts]: Start accepts. Automaton has 6320 states and 7817 transitions. Word has length 470 [2021-02-21 21:46:20,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:20,736 INFO L480 AbstractCegarLoop]: Abstraction has 6320 states and 7817 transitions. [2021-02-21 21:46:20,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:46:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand 6320 states and 7817 transitions. [2021-02-21 21:46:20,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-02-21 21:46:20,749 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:20,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:20,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:46:20,750 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:20,751 INFO L82 PathProgramCache]: Analyzing trace with hash 774680955, now seen corresponding path program 1 times [2021-02-21 21:46:20,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:20,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290799764] [2021-02-21 21:46:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:20,757 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:20,990 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-21 21:46:20,991 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-21 21:46:21,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:21,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:46:21,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:21,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:21,351 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:46:21,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:21,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:21,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:21,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290799764] [2021-02-21 21:46:21,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:21,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:46:21,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581808001] [2021-02-21 21:46:21,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:46:21,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:21,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:46:21,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:46:21,662 INFO L87 Difference]: Start difference. First operand 6320 states and 7817 transitions. Second operand 6 states. [2021-02-21 21:46:26,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:26,482 INFO L93 Difference]: Finished difference Result 17878 states and 22142 transitions. [2021-02-21 21:46:26,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:46:26,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 470 [2021-02-21 21:46:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:26,532 INFO L225 Difference]: With dead ends: 17878 [2021-02-21 21:46:26,532 INFO L226 Difference]: Without dead ends: 11756 [2021-02-21 21:46:26,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:46:26,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11756 states. [2021-02-21 21:46:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11756 to 11754. [2021-02-21 21:46:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11754 states. [2021-02-21 21:46:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11754 states to 11754 states and 14456 transitions. [2021-02-21 21:46:27,604 INFO L78 Accepts]: Start accepts. Automaton has 11754 states and 14456 transitions. Word has length 470 [2021-02-21 21:46:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:27,604 INFO L480 AbstractCegarLoop]: Abstraction has 11754 states and 14456 transitions. [2021-02-21 21:46:27,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:46:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 11754 states and 14456 transitions. [2021-02-21 21:46:27,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-02-21 21:46:27,624 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:27,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:27,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:46:27,625 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:27,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:27,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2022889176, now seen corresponding path program 1 times [2021-02-21 21:46:27,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:27,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941996211] [2021-02-21 21:46:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:27,629 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:27,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:27,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:27,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:27,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:46:27,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:27,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:46:27,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:27,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:28,165 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:46:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:28,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:28,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:28,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941996211] [2021-02-21 21:46:28,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:28,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:46:28,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624358243] [2021-02-21 21:46:28,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:46:28,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:28,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:46:28,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:46:28,450 INFO L87 Difference]: Start difference. First operand 11754 states and 14456 transitions. Second operand 5 states. [2021-02-21 21:46:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:34,042 INFO L93 Difference]: Finished difference Result 33967 states and 41767 transitions. [2021-02-21 21:46:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:46:34,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 470 [2021-02-21 21:46:34,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:34,086 INFO L225 Difference]: With dead ends: 33967 [2021-02-21 21:46:34,087 INFO L226 Difference]: Without dead ends: 22486 [2021-02-21 21:46:34,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:46:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22486 states. [2021-02-21 21:46:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22486 to 22484. [2021-02-21 21:46:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22484 states. [2021-02-21 21:46:36,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22484 states to 22484 states and 27480 transitions. [2021-02-21 21:46:36,013 INFO L78 Accepts]: Start accepts. Automaton has 22484 states and 27480 transitions. Word has length 470 [2021-02-21 21:46:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:36,014 INFO L480 AbstractCegarLoop]: Abstraction has 22484 states and 27480 transitions. [2021-02-21 21:46:36,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:46:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 22484 states and 27480 transitions. [2021-02-21 21:46:36,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2021-02-21 21:46:36,055 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:36,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:36,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:46:36,056 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:36,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:36,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1333420558, now seen corresponding path program 1 times [2021-02-21 21:46:36,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:36,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382346430] [2021-02-21 21:46:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:36,061 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:36,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:36,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:36,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:36,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:46:36,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:36,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:36,531 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:46:36,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:36,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:36,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:36,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382346430] [2021-02-21 21:46:36,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:36,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:46:36,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318275963] [2021-02-21 21:46:36,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:46:36,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:36,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:46:36,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:36,686 INFO L87 Difference]: Start difference. First operand 22484 states and 27480 transitions. Second operand 4 states. [2021-02-21 21:46:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:44,671 INFO L93 Difference]: Finished difference Result 66841 states and 81748 transitions. [2021-02-21 21:46:44,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:44,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 471 [2021-02-21 21:46:44,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:44,766 INFO L225 Difference]: With dead ends: 66841 [2021-02-21 21:46:44,767 INFO L226 Difference]: Without dead ends: 44680 [2021-02-21 21:46:44,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:44,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44680 states. [2021-02-21 21:46:46,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44680 to 22494. [2021-02-21 21:46:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22494 states. [2021-02-21 21:46:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22494 states to 22494 states and 27490 transitions. [2021-02-21 21:46:46,977 INFO L78 Accepts]: Start accepts. Automaton has 22494 states and 27490 transitions. Word has length 471 [2021-02-21 21:46:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:46,978 INFO L480 AbstractCegarLoop]: Abstraction has 22494 states and 27490 transitions. [2021-02-21 21:46:46,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:46:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 22494 states and 27490 transitions. [2021-02-21 21:46:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-02-21 21:46:47,010 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:47,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:47,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:46:47,011 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:47,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:47,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1173626859, now seen corresponding path program 1 times [2021-02-21 21:46:47,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:47,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834216127] [2021-02-21 21:46:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:47,015 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:47,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:47,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:47,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:47,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:46:47,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:47,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:47,462 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:46:47,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:47,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:47,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:47,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834216127] [2021-02-21 21:46:47,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:47,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:46:47,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143550511] [2021-02-21 21:46:47,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:46:47,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:47,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:46:47,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:47,709 INFO L87 Difference]: Start difference. First operand 22494 states and 27490 transitions. Second operand 4 states. [2021-02-21 21:46:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:56,308 INFO L93 Difference]: Finished difference Result 64199 states and 78400 transitions. [2021-02-21 21:46:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:46:56,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 472 [2021-02-21 21:46:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:56,391 INFO L225 Difference]: With dead ends: 64199 [2021-02-21 21:46:56,392 INFO L226 Difference]: Without dead ends: 43207 [2021-02-21 21:46:56,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:46:56,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43207 states. [2021-02-21 21:47:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43207 to 43205. [2021-02-21 21:47:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43205 states. [2021-02-21 21:47:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43205 states to 43205 states and 52420 transitions. [2021-02-21 21:47:00,736 INFO L78 Accepts]: Start accepts. Automaton has 43205 states and 52420 transitions. Word has length 472 [2021-02-21 21:47:00,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:47:00,737 INFO L480 AbstractCegarLoop]: Abstraction has 43205 states and 52420 transitions. [2021-02-21 21:47:00,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:47:00,737 INFO L276 IsEmpty]: Start isEmpty. Operand 43205 states and 52420 transitions. [2021-02-21 21:47:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-02-21 21:47:00,781 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:47:00,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:47:00,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 21:47:00,781 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:47:00,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:47:00,782 INFO L82 PathProgramCache]: Analyzing trace with hash 365260693, now seen corresponding path program 1 times [2021-02-21 21:47:00,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:47:00,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185592872] [2021-02-21 21:47:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:47:00,786 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:47:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:00,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:00,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:00,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:00,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:47:00,957 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-21 21:47:00,959 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-21 21:47:00,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:00,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:47:00,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:00,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:01,301 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:47:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:47:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:01,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:01,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:47:01,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185592872] [2021-02-21 21:47:01,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:47:01,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:47:01,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749316778] [2021-02-21 21:47:01,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:47:01,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:47:01,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:47:01,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:47:01,518 INFO L87 Difference]: Start difference. First operand 43205 states and 52420 transitions. Second operand 6 states. [2021-02-21 21:47:12,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:47:12,918 INFO L93 Difference]: Finished difference Result 116475 states and 140997 transitions. [2021-02-21 21:47:12,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:47:12,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 472 [2021-02-21 21:47:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:47:13,046 INFO L225 Difference]: With dead ends: 116475 [2021-02-21 21:47:13,046 INFO L226 Difference]: Without dead ends: 73569 [2021-02-21 21:47:13,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:47:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73569 states. [2021-02-21 21:47:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73569 to 73567. [2021-02-21 21:47:20,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73567 states. [2021-02-21 21:47:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73567 states to 73567 states and 88343 transitions. [2021-02-21 21:47:20,465 INFO L78 Accepts]: Start accepts. Automaton has 73567 states and 88343 transitions. Word has length 472 [2021-02-21 21:47:20,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:47:20,465 INFO L480 AbstractCegarLoop]: Abstraction has 73567 states and 88343 transitions. [2021-02-21 21:47:20,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:47:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 73567 states and 88343 transitions. [2021-02-21 21:47:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-02-21 21:47:20,524 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:47:20,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:47:20,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 21:47:20,525 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:47:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:47:20,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1550629286, now seen corresponding path program 1 times [2021-02-21 21:47:20,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:47:20,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661805697] [2021-02-21 21:47:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:47:20,530 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:47:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:20,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:20,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:20,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:20,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:47:20,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:20,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:47:20,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:20,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:21,014 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:47:21,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:47:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:21,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:21,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:47:21,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661805697] [2021-02-21 21:47:21,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:47:21,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:47:21,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110734137] [2021-02-21 21:47:21,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:47:21,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:47:21,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:47:21,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:47:21,200 INFO L87 Difference]: Start difference. First operand 73567 states and 88343 transitions. Second operand 5 states. [2021-02-21 21:47:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:47:33,808 INFO L93 Difference]: Finished difference Result 147631 states and 177256 transitions. [2021-02-21 21:47:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:47:33,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 472 [2021-02-21 21:47:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:47:33,913 INFO L225 Difference]: With dead ends: 147631 [2021-02-21 21:47:33,913 INFO L226 Difference]: Without dead ends: 74864 [2021-02-21 21:47:34,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:47:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74864 states. [2021-02-21 21:47:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74864 to 74237. [2021-02-21 21:47:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74237 states. [2021-02-21 21:47:42,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74237 states to 74237 states and 89080 transitions. [2021-02-21 21:47:42,040 INFO L78 Accepts]: Start accepts. Automaton has 74237 states and 89080 transitions. Word has length 472 [2021-02-21 21:47:42,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:47:42,041 INFO L480 AbstractCegarLoop]: Abstraction has 74237 states and 89080 transitions. [2021-02-21 21:47:42,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:47:42,041 INFO L276 IsEmpty]: Start isEmpty. Operand 74237 states and 89080 transitions. [2021-02-21 21:47:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-02-21 21:47:42,118 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:47:42,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:47:42,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 21:47:42,119 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:47:42,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:47:42,120 INFO L82 PathProgramCache]: Analyzing trace with hash -61253668, now seen corresponding path program 1 times [2021-02-21 21:47:42,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:47:42,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071927490] [2021-02-21 21:47:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:47:42,124 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:47:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:42,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:42,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:42,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:42,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:47:42,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:42,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:42,756 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:47:42,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:47:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:47:42,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:47:42,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:47:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:47:43,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071927490] [2021-02-21 21:47:43,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:47:43,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:47:43,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690570596] [2021-02-21 21:47:43,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:47:43,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:47:43,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:47:43,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:47:43,096 INFO L87 Difference]: Start difference. First operand 74237 states and 89080 transitions. Second operand 4 states. [2021-02-21 21:48:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:48:04,011 INFO L93 Difference]: Finished difference Result 219321 states and 263358 transitions. [2021-02-21 21:48:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:48:04,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 473 [2021-02-21 21:48:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:48:04,246 INFO L225 Difference]: With dead ends: 219321 [2021-02-21 21:48:04,246 INFO L226 Difference]: Without dead ends: 147619 [2021-02-21 21:48:04,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:48:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147619 states. [2021-02-21 21:48:13,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147619 to 74277. [2021-02-21 21:48:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74277 states. [2021-02-21 21:48:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74277 states to 74277 states and 89120 transitions. [2021-02-21 21:48:13,973 INFO L78 Accepts]: Start accepts. Automaton has 74277 states and 89120 transitions. Word has length 473 [2021-02-21 21:48:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:48:13,973 INFO L480 AbstractCegarLoop]: Abstraction has 74277 states and 89120 transitions. [2021-02-21 21:48:13,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:48:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 74277 states and 89120 transitions. [2021-02-21 21:48:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-02-21 21:48:14,032 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:48:14,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:48:14,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 21:48:14,033 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:48:14,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:48:14,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1302762327, now seen corresponding path program 1 times [2021-02-21 21:48:14,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:48:14,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705167599] [2021-02-21 21:48:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:48:14,040 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:48:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:48:14,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:48:14,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:48:14,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:48:14,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:48:14,510 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-21 21:48:14,513 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-21 21:48:14,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:48:14,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:48:14,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:48:14,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:48:14,857 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 21:48:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:48:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:48:14,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:48:14,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:48:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:48:15,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705167599] [2021-02-21 21:48:15,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:48:15,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:48:15,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457809407] [2021-02-21 21:48:15,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:48:15,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:48:15,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:48:15,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:48:15,306 INFO L87 Difference]: Start difference. First operand 74277 states and 89120 transitions. Second operand 6 states. [2021-02-21 21:48:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:48:29,645 INFO L93 Difference]: Finished difference Result 150261 states and 180166 transitions. [2021-02-21 21:48:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:48:29,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 474 [2021-02-21 21:48:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:48:29,737 INFO L225 Difference]: With dead ends: 150261 [2021-02-21 21:48:29,737 INFO L226 Difference]: Without dead ends: 76627 [2021-02-21 21:48:29,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:48:29,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76627 states. [2021-02-21 21:48:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76627 to 75641. [2021-02-21 21:48:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75641 states. [2021-02-21 21:48:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75641 states to 75641 states and 90590 transitions. [2021-02-21 21:48:39,564 INFO L78 Accepts]: Start accepts. Automaton has 75641 states and 90590 transitions. Word has length 474 [2021-02-21 21:48:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:48:39,565 INFO L480 AbstractCegarLoop]: Abstraction has 75641 states and 90590 transitions. [2021-02-21 21:48:39,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:48:39,565 INFO L276 IsEmpty]: Start isEmpty. Operand 75641 states and 90590 transitions. [2021-02-21 21:48:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-02-21 21:48:39,610 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:48:39,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:48:39,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 21:48:39,611 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:48:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:48:39,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1568155524, now seen corresponding path program 1 times [2021-02-21 21:48:39,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:48:39,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717413318] [2021-02-21 21:48:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:48:39,615 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:48:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:48:39,691 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:48:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:48:39,775 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:48:40,627 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:48:40,628 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:48:40,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 21:48:40,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:48:40 BoogieIcfgContainer [2021-02-21 21:48:40,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:48:40,691 INFO L168 Benchmark]: Toolchain (without parser) took 171318.01 ms. Allocated memory was 154.1 MB in the beginning and 6.5 GB in the end (delta: 6.4 GB). Free memory was 129.1 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-02-21 21:48:40,692 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:48:40,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1063.91 ms. Allocated memory is still 154.1 MB. Free memory was 128.1 MB in the beginning and 129.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:48:40,692 INFO L168 Benchmark]: Boogie Preprocessor took 104.50 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 125.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:48:40,693 INFO L168 Benchmark]: RCFGBuilder took 1946.21 ms. Allocated memory was 154.1 MB in the beginning and 190.8 MB in the end (delta: 36.7 MB). Free memory was 125.0 MB in the beginning and 125.3 MB in the end (delta: -319.0 kB). Peak memory consumption was 66.3 MB. Max. memory is 8.0 GB. [2021-02-21 21:48:40,693 INFO L168 Benchmark]: TraceAbstraction took 168184.54 ms. Allocated memory was 190.8 MB in the beginning and 6.5 GB in the end (delta: 6.3 GB). Free memory was 124.8 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-02-21 21:48:40,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1063.91 ms. Allocated memory is still 154.1 MB. Free memory was 128.1 MB in the beginning and 129.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.50 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 125.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1946.21 ms. Allocated memory was 154.1 MB in the beginning and 190.8 MB in the end (delta: 36.7 MB). Free memory was 125.0 MB in the beginning and 125.3 MB in the end (delta: -319.0 kB). Peak memory consumption was 66.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 168184.54 ms. Allocated memory was 190.8 MB in the beginning and 6.5 GB in the end (delta: 6.3 GB). Free memory was 124.8 MB in the beginning and 3.9 GB in the end (delta: -3.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 893]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] _Bool newmax1 = 0; [L49] char id2 = '\x0'; [L50] char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] _Bool newmax2 = 0; [L57] char id3 = '\x0'; [L58] char r3 = '\x0'; [L59] char st3 = '\x0'; [L60] char nl3 = '\x0'; [L61] char m3 = '\x0'; [L62] char max3 = '\x0'; [L63] _Bool mode3 = 0; [L64] _Bool newmax3 = 0; [L68] void (*nodes[3])() = { &node1, &node2, &node3 }; [L72] int __return_1863; [L73] int __return_2009; [L74] int __return_2142; [L75] int __return_2281; [L76] int __return_2419; [L77] int __tmp_2420_0; [L78] int __return_2543; [L79] int __return_2433; [L82] int main__c1; [L83] int main__i2; [L84] main__c1 = 0 [L85] ep12 = __VERIFIER_nondet_bool() [L86] ep13 = __VERIFIER_nondet_bool() [L87] ep21 = __VERIFIER_nondet_bool() [L88] ep23 = __VERIFIER_nondet_bool() [L89] ep31 = __VERIFIER_nondet_bool() [L90] ep32 = __VERIFIER_nondet_bool() [L91] id1 = __VERIFIER_nondet_char() [L92] r1 = __VERIFIER_nondet_char() [L93] st1 = __VERIFIER_nondet_char() [L94] nl1 = __VERIFIER_nondet_char() [L95] m1 = __VERIFIER_nondet_char() [L96] max1 = __VERIFIER_nondet_char() [L97] mode1 = __VERIFIER_nondet_bool() [L98] newmax1 = __VERIFIER_nondet_bool() [L99] id2 = __VERIFIER_nondet_char() [L100] r2 = __VERIFIER_nondet_char() [L101] st2 = __VERIFIER_nondet_char() [L102] nl2 = __VERIFIER_nondet_char() [L103] m2 = __VERIFIER_nondet_char() [L104] max2 = __VERIFIER_nondet_char() [L105] mode2 = __VERIFIER_nondet_bool() [L106] newmax2 = __VERIFIER_nondet_bool() [L107] id3 = __VERIFIER_nondet_char() [L108] r3 = __VERIFIER_nondet_char() [L109] st3 = __VERIFIER_nondet_char() [L110] nl3 = __VERIFIER_nondet_char() [L111] m3 = __VERIFIER_nondet_char() [L112] max3 = __VERIFIER_nondet_char() [L113] mode3 = __VERIFIER_nondet_bool() [L114] newmax3 = __VERIFIER_nondet_bool() [L116] _Bool init__r121; [L117] _Bool init__r131; [L118] _Bool init__r211; [L119] _Bool init__r231; [L120] _Bool init__r311; [L121] _Bool init__r321; [L122] _Bool init__r122; [L123] int init__tmp; [L124] _Bool init__r132; [L125] int init__tmp___0; [L126] _Bool init__r212; [L127] int init__tmp___1; [L128] _Bool init__r232; [L129] int init__tmp___2; [L130] _Bool init__r312; [L131] int init__tmp___3; [L132] _Bool init__r322; [L133] int init__tmp___4; [L134] int init__tmp___5; [L135] init__r121 = ep12 [L136] init__r131 = ep13 [L137] init__r211 = ep21 [L138] init__r231 = ep23 [L139] init__r311 = ep31 [L140] init__r321 = ep32 [L141] COND FALSE !(!(init__r121 == 0)) [L2435] COND FALSE !(!(init__r131 == 0)) [L2451] init__tmp = 0 [L145] init__r122 = (_Bool)init__tmp [L146] COND FALSE !(!(init__r131 == 0)) [L2412] COND FALSE !(!(init__r121 == 0)) [L2428] init__tmp___0 = 0 [L150] init__r132 = (_Bool)init__tmp___0 [L151] COND FALSE !(!(init__r211 == 0)) [L2389] COND FALSE !(!(init__r231 == 0)) [L2405] init__tmp___1 = 0 [L155] init__r212 = (_Bool)init__tmp___1 [L156] COND FALSE !(!(init__r231 == 0)) [L2366] COND FALSE !(!(init__r211 == 0)) [L2382] init__tmp___2 = 0 [L160] init__r232 = (_Bool)init__tmp___2 [L161] COND FALSE !(!(init__r311 == 0)) [L2343] COND FALSE !(!(init__r321 == 0)) [L2359] init__tmp___3 = 0 [L165] init__r312 = (_Bool)init__tmp___3 [L166] COND FALSE !(!(init__r321 == 0)) [L2320] COND FALSE !(!(init__r311 == 0)) [L2336] init__tmp___4 = 0 [L170] init__r322 = (_Bool)init__tmp___4 [L171] COND TRUE ((int)id1) != ((int)id2) [L173] COND TRUE ((int)id1) != ((int)id3) [L175] COND TRUE ((int)id2) != ((int)id3) [L177] COND TRUE ((int)id1) >= 0 [L179] COND TRUE ((int)id2) >= 0 [L181] COND TRUE ((int)id3) >= 0 [L183] COND TRUE ((int)r1) == 0 [L185] COND TRUE ((int)r2) == 0 [L187] COND TRUE ((int)r3) == 0 [L189] COND TRUE ((int)max1) == ((int)id1) [L191] COND TRUE ((int)max2) == ((int)id2) [L193] COND TRUE ((int)max3) == ((int)id3) [L195] COND TRUE ((int)st1) == 0 [L197] COND TRUE ((int)st2) == 0 [L199] COND TRUE ((int)st3) == 0 [L201] COND TRUE ((int)nl1) == 0 [L203] COND TRUE ((int)nl2) == 0 [L205] COND TRUE ((int)nl3) == 0 [L207] COND TRUE ((int)mode1) == 0 [L209] COND TRUE ((int)mode2) == 0 [L211] COND TRUE ((int)mode3) == 0 [L213] COND TRUE !(newmax1 == 0) [L215] COND TRUE !(newmax2 == 0) [L217] COND TRUE !(newmax3 == 0) [L219] init__tmp___5 = 1 [L220] __return_1863 = init__tmp___5 [L221] main__i2 = __return_1863 [L222] COND TRUE main__i2 != 0 [L224] p12_old = nomsg [L225] p12_new = nomsg [L226] p13_old = nomsg [L227] p13_new = nomsg [L228] p21_old = nomsg [L229] p21_new = nomsg [L230] p23_old = nomsg [L231] p23_new = nomsg [L232] p31_old = nomsg [L233] p31_new = nomsg [L234] p32_old = nomsg [L235] p32_new = nomsg [L236] main__i2 = 0 [L237] COND TRUE main__i2 < 6 [L240] _Bool node1__newmax; [L241] node1__newmax = 0 [L242] COND FALSE !(!(mode1 == 0)) [L248] COND TRUE ((int)r1) < 2 [L250] COND FALSE !(!(ep12 == 0)) [L263] COND FALSE !(!(ep13 == 0)) [L276] mode1 = 1 [L278] _Bool node2__newmax; [L279] node2__newmax = 0 [L280] COND FALSE !(!(mode2 == 0)) [L286] COND TRUE ((int)r2) < 2 [L288] COND FALSE !(!(ep21 == 0)) [L301] COND FALSE !(!(ep23 == 0)) [L314] mode2 = 1 [L316] _Bool node3__newmax; [L317] node3__newmax = 0 [L318] COND FALSE !(!(mode3 == 0)) [L324] COND TRUE ((int)r3) < 2 [L326] COND FALSE !(!(ep31 == 0)) [L339] COND FALSE !(!(ep32 == 0)) [L352] mode3 = 1 [L353] p12_old = p12_new [L354] p12_new = nomsg [L355] p13_old = p13_new [L356] p13_new = nomsg [L357] p21_old = p21_new [L358] p21_new = nomsg [L359] p23_old = p23_new [L360] p23_new = nomsg [L361] p31_old = p31_new [L362] p31_new = nomsg [L363] p32_old = p32_new [L364] p32_new = nomsg [L366] int check__tmp; [L367] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L369] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L371] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L373] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L375] COND FALSE !(((int)r1) >= 2) [L381] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L383] COND TRUE ((int)r1) < 2 [L385] COND FALSE !(((int)r1) >= 2) [L391] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L393] COND TRUE ((int)r1) < 2 [L395] check__tmp = 1 [L396] __return_2009 = check__tmp [L397] main__c1 = __return_2009 [L399] _Bool __tmp_1; [L400] __tmp_1 = main__c1 [L401] _Bool assert__arg; [L402] assert__arg = __tmp_1 [L403] COND FALSE !(assert__arg == 0) [L409] int main____CPAchecker_TMP_0 = main__i2; [L410] main__i2 = main__i2 + 1 [L411] COND TRUE main__i2 < 6 [L414] _Bool node1__newmax; [L415] node1__newmax = 0 [L416] COND TRUE !(mode1 == 0) [L418] r1 = (char)(((int)r1) + 1) [L419] COND FALSE !(!(ep21 == 0)) [L428] COND FALSE !(!(ep31 == 0)) [L437] newmax1 = node1__newmax [L438] COND FALSE !(((int)r1) == 2) [L444] mode1 = 0 [L446] _Bool node2__newmax; [L447] node2__newmax = 0 [L448] COND TRUE !(mode2 == 0) [L450] r2 = (char)(((int)r2) + 1) [L451] COND FALSE !(!(ep12 == 0)) [L460] COND FALSE !(!(ep32 == 0)) [L469] newmax2 = node2__newmax [L470] COND FALSE !(((int)r2) == 2) [L476] mode2 = 0 [L478] _Bool node3__newmax; [L479] node3__newmax = 0 [L480] COND TRUE !(mode3 == 0) [L482] r3 = (char)(((int)r3) + 1) [L483] COND FALSE !(!(ep13 == 0)) [L492] COND FALSE !(!(ep23 == 0)) [L501] newmax3 = node3__newmax [L502] COND FALSE !(((int)r3) == 2) [L508] mode3 = 0 [L509] p12_old = p12_new [L510] p12_new = nomsg [L511] p13_old = p13_new [L512] p13_new = nomsg [L513] p21_old = p21_new [L514] p21_new = nomsg [L515] p23_old = p23_new [L516] p23_new = nomsg [L517] p31_old = p31_new [L518] p31_new = nomsg [L519] p32_old = p32_new [L520] p32_new = nomsg [L522] int check__tmp; [L523] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L525] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L527] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L529] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L531] COND FALSE !(((int)r1) >= 2) [L537] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L539] COND TRUE ((int)r1) < 2 [L541] COND FALSE !(((int)r1) >= 2) [L547] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L549] COND TRUE ((int)r1) < 2 [L551] check__tmp = 1 [L552] __return_2142 = check__tmp [L553] main__c1 = __return_2142 [L555] _Bool __tmp_2; [L556] __tmp_2 = main__c1 [L557] _Bool assert__arg; [L558] assert__arg = __tmp_2 [L559] COND FALSE !(assert__arg == 0) [L565] int main____CPAchecker_TMP_0 = main__i2; [L566] main__i2 = main__i2 + 1 [L567] COND TRUE main__i2 < 6 [L570] _Bool node1__newmax; [L571] node1__newmax = 0 [L572] COND FALSE !(!(mode1 == 0)) [L578] COND TRUE ((int)r1) < 2 [L580] COND FALSE !(!(ep12 == 0)) [L593] COND FALSE !(!(ep13 == 0)) [L606] mode1 = 1 [L608] _Bool node2__newmax; [L609] node2__newmax = 0 [L610] COND FALSE !(!(mode2 == 0)) [L616] COND TRUE ((int)r2) < 2 [L618] COND FALSE !(!(ep21 == 0)) [L631] COND FALSE !(!(ep23 == 0)) [L644] mode2 = 1 [L646] _Bool node3__newmax; [L647] node3__newmax = 0 [L648] COND FALSE !(!(mode3 == 0)) [L654] COND TRUE ((int)r3) < 2 [L656] COND FALSE !(!(ep31 == 0)) [L669] COND FALSE !(!(ep32 == 0)) [L682] mode3 = 1 [L683] p12_old = p12_new [L684] p12_new = nomsg [L685] p13_old = p13_new [L686] p13_new = nomsg [L687] p21_old = p21_new [L688] p21_new = nomsg [L689] p23_old = p23_new [L690] p23_new = nomsg [L691] p31_old = p31_new [L692] p31_new = nomsg [L693] p32_old = p32_new [L694] p32_new = nomsg [L696] int check__tmp; [L697] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L699] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L701] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L703] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L705] COND FALSE !(((int)r1) >= 2) [L711] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L713] COND TRUE ((int)r1) < 2 [L715] COND FALSE !(((int)r1) >= 2) [L721] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L723] COND TRUE ((int)r1) < 2 [L725] check__tmp = 1 [L726] __return_2281 = check__tmp [L727] main__c1 = __return_2281 [L729] _Bool __tmp_3; [L730] __tmp_3 = main__c1 [L731] _Bool assert__arg; [L732] assert__arg = __tmp_3 [L733] COND FALSE !(assert__arg == 0) [L739] int main____CPAchecker_TMP_0 = main__i2; [L740] main__i2 = main__i2 + 1 [L741] COND TRUE main__i2 < 6 [L744] _Bool node1__newmax; [L745] node1__newmax = 0 [L746] COND TRUE !(mode1 == 0) [L748] r1 = (char)(((int)r1) + 1) [L749] COND FALSE !(!(ep21 == 0)) [L758] COND FALSE !(!(ep31 == 0)) [L767] newmax1 = node1__newmax [L768] COND TRUE ((int)r1) == 2 [L770] COND TRUE ((int)max1) == ((int)id1) [L772] st1 = 1 [L774] mode1 = 0 [L776] _Bool node2__newmax; [L777] node2__newmax = 0 [L778] COND TRUE !(mode2 == 0) [L780] r2 = (char)(((int)r2) + 1) [L781] COND FALSE !(!(ep12 == 0)) [L790] COND FALSE !(!(ep32 == 0)) [L799] newmax2 = node2__newmax [L800] COND TRUE ((int)r2) == 2 [L802] COND TRUE ((int)max2) == ((int)id2) [L804] st2 = 1 [L806] mode2 = 0 [L808] _Bool node3__newmax; [L809] node3__newmax = 0 [L810] COND TRUE !(mode3 == 0) [L812] r3 = (char)(((int)r3) + 1) [L813] COND FALSE !(!(ep13 == 0)) [L822] COND FALSE !(!(ep23 == 0)) [L831] newmax3 = node3__newmax [L832] COND TRUE ((int)r3) == 2 [L834] COND TRUE ((int)max3) == ((int)id3) [L836] st3 = 1 [L838] mode3 = 0 [L839] p12_old = p12_new [L840] p12_new = nomsg [L841] p13_old = p13_new [L842] p13_new = nomsg [L843] p21_old = p21_new [L844] p21_new = nomsg [L845] p23_old = p23_new [L846] p23_new = nomsg [L847] p31_old = p31_new [L848] p31_new = nomsg [L849] p32_old = p32_new [L850] p32_new = nomsg [L852] int check__tmp; [L853] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1535] check__tmp = 0 [L881] __return_2419 = check__tmp [L882] main__c1 = __return_2419 [L883] __tmp_2420_0 = main____CPAchecker_TMP_0 [L885] main____CPAchecker_TMP_0 = __tmp_2420_0 [L887] _Bool __tmp_4; [L888] __tmp_4 = main__c1 [L889] _Bool assert__arg; [L890] assert__arg = __tmp_4 [L891] COND TRUE assert__arg == 0 [L893] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 928 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 168.0s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 109.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19680 SDtfs, 15032 SDslu, 14570 SDs, 0 SdLazy, 20323 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75641occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 45.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 100686 StatesRemovedByMinimization, 13 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...