/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:01:55,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:01:55,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:01:55,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:01:55,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:01:55,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:01:55,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:01:55,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:01:55,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:01:55,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:01:55,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:01:55,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:01:55,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:01:55,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:01:55,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:01:55,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:01:55,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:01:55,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:01:55,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:01:55,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:01:55,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:01:55,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:01:55,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:01:55,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:01:55,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:01:55,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:01:55,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:01:55,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:01:55,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:01:55,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:01:55,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:01:55,836 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:01:55,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:01:55,836 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:01:55,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:01:55,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:01:55,837 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:01:55,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:01:55,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:01:55,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:01:55,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:01:55,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:01:55,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:01:55,839 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:01:55,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:01:56,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:01:56,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:01:56,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:01:56,343 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:01:56,344 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:01:56,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2021-02-22 02:01:56,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4661136/710b3b547f5f45fb8d4c4215d4bcb302/FLAGf96a2ae19 [2021-02-22 02:01:57,232 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:01:57,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2021-02-22 02:01:57,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4661136/710b3b547f5f45fb8d4c4215d4bcb302/FLAGf96a2ae19 [2021-02-22 02:01:57,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4661136/710b3b547f5f45fb8d4c4215d4bcb302 [2021-02-22 02:01:57,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:01:57,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:01:57,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:57,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:01:57,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:01:57,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:57" (1/1) ... [2021-02-22 02:01:57,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184f2f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:57, skipping insertion in model container [2021-02-22 02:01:57,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:57" (1/1) ... [2021-02-22 02:01:57,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:01:57,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:01:57,854 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c[19099,19112] [2021-02-22 02:01:57,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:57,907 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:01:58,112 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c[19099,19112] [2021-02-22 02:01:58,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:58,164 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:01:58,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:58 WrapperNode [2021-02-22 02:01:58,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:58,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:01:58,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:01:58,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:01:58,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:58" (1/1) ... [2021-02-22 02:01:58,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:58" (1/1) ... [2021-02-22 02:01:58,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:58" (1/1) ... [2021-02-22 02:01:58,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:58" (1/1) ... [2021-02-22 02:01:58,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:58" (1/1) ... [2021-02-22 02:01:58,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:58" (1/1) ... [2021-02-22 02:01:58,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:58" (1/1) ... [2021-02-22 02:01:58,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:01:58,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:01:58,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:01:58,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:01:58,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:58" (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 [2021-02-22 02:01:58,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:01:58,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:01:58,424 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:01:58,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-22 02:01:58,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:01:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-22 02:01:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:01:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:01:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:01:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:01:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:01:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 02:01:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:01:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:01:58,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:01:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:01:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:01:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:01:58,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:01:59,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:01:59,807 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 02:01:59,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:59 BoogieIcfgContainer [2021-02-22 02:01:59,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:01:59,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:01:59,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:01:59,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:01:59,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:01:57" (1/3) ... [2021-02-22 02:01:59,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b61a926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:59, skipping insertion in model container [2021-02-22 02:01:59,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:58" (2/3) ... [2021-02-22 02:01:59,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b61a926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:59, skipping insertion in model container [2021-02-22 02:01:59,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:59" (3/3) ... [2021-02-22 02:01:59,820 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2021-02-22 02:01:59,828 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:01:59,834 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:01:59,855 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:01:59,880 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:01:59,880 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:01:59,880 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:01:59,880 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:01:59,880 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:01:59,880 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:01:59,881 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:01:59,881 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:01:59,915 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states. [2021-02-22 02:01:59,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-02-22 02:01:59,944 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:59,945 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] [2021-02-22 02:01:59,946 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:59,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1152266589, now seen corresponding path program 1 times [2021-02-22 02:01:59,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:59,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29424007] [2021-02-22 02:01:59,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:02:00,054 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:02:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:02:00,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:00,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:02:00,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:00,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:02:00,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:00,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:02:00,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:00,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:02:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:02:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:02:00,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:00,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:02:00,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:00,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:02:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:02:00,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29424007] [2021-02-22 02:02:00,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:02:00,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:02:00,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287785676] [2021-02-22 02:02:00,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:02:00,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:02:00,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:02:00,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:02:00,859 INFO L87 Difference]: Start difference. First operand 534 states. Second operand 4 states. [2021-02-22 02:02:03,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:02:03,723 INFO L93 Difference]: Finished difference Result 1349 states and 1747 transitions. [2021-02-22 02:02:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 02:02:03,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2021-02-22 02:02:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:02:03,749 INFO L225 Difference]: With dead ends: 1349 [2021-02-22 02:02:03,750 INFO L226 Difference]: Without dead ends: 749 [2021-02-22 02:02:03,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:02:03,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-02-22 02:02:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 672. [2021-02-22 02:02:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2021-02-22 02:02:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 788 transitions. [2021-02-22 02:02:04,066 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 788 transitions. Word has length 145 [2021-02-22 02:02:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:02:04,071 INFO L480 AbstractCegarLoop]: Abstraction has 672 states and 788 transitions. [2021-02-22 02:02:04,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:02:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 788 transitions. [2021-02-22 02:02:04,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-22 02:02:04,092 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:02:04,093 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:02:04,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:02:04,093 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:02:04,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:02:04,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2096167395, now seen corresponding path program 1 times [2021-02-22 02:02:04,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:02:04,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503833913] [2021-02-22 02:02:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:02:04,169 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-22 02:02:04,196 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-22 02:02:04,206 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-22 02:02:04,217 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-22 02:02:04,264 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:02:04,296 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:02:04,315 WARN L141 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size [2021-02-22 02:02:04,328 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:02:04,343 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:04,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:04,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:04,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:02:04,366 WARN L147 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size 83 [2021-02-22 02:02:04,376 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-22 02:02:04,392 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-22 02:02:04,400 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-22 02:02:04,412 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-22 02:02:04,459 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:02:04,467 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:02:04,480 WARN L141 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size [2021-02-22 02:02:04,482 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:02:04,487 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:04,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:04,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:04,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:02:04,501 WARN L147 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size 83 [2021-02-22 02:02:04,511 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-22 02:02:04,522 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-22 02:02:04,530 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-22 02:02:04,545 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-22 02:02:04,586 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:02:04,596 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:02:04,609 WARN L141 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size [2021-02-22 02:02:04,616 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:02:04,619 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:04,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:04,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:04,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:02:04,633 WARN L147 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size 83 [2021-02-22 02:02:04,639 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-22 02:02:04,655 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-22 02:02:04,661 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-22 02:02:04,671 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-22 02:02:04,710 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:02:04,713 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:02:04,717 WARN L141 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size [2021-02-22 02:02:04,719 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:02:04,721 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:04,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:04,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:04,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:02:04,728 WARN L147 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size 83 [2021-02-22 02:02:04,729 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:02:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:02:05,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:02:05,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:02:05,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:02:05,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:02:05,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:02:05,043 WARN L141 QuantifierPusher]: treesize reduction 20, result has 16.7 percent of original size [2021-02-22 02:02:05,043 WARN L147 QuantifierPusher]: treesize reduction 20, result has 16.7 percent of original size 4 [2021-02-22 02:02:05,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:02:05,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:02:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:02:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:02:05,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:02:05,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:02:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:02:05,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-22 02:02:05,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-22 02:02:05,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-22 02:02:05,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-22 02:02:05,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-22 02:02:05,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-22 02:02:05,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-22 02:02:05,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-22 02:02:05,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-02-22 02:02:05,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-02-22 02:02:05,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-02-22 02:02:05,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-02-22 02:02:05,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-02-22 02:02:05,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-02-22 02:02:05,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-02-22 02:02:05,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-02-22 02:02:05,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:05,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:05,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:02:05,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-02-22 02:02:06,119 WARN L141 QuantifierPusher]: treesize reduction 97, result has 44.6 percent of original size [2021-02-22 02:02:06,122 WARN L147 QuantifierPusher]: treesize reduction 97, result has 44.6 percent of original size 78 [2021-02-22 02:02:06,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:06,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:02:06,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:06,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:02:06,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:06,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:02:06,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:02:06,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:06,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:02:06,401 WARN L141 QuantifierPusher]: treesize reduction -2, result has 106.5 percent of original size [2021-02-22 02:02:06,402 WARN L147 QuantifierPusher]: treesize reduction -2, result has 106.5 percent of original size 33 [2021-02-22 02:02:06,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:06,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:02:06,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:06,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-22 02:02:06,517 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-22 02:02:06,518 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-22 02:02:06,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:06,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:02:06,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:02:06,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-22 02:02:06,665 WARN L141 QuantifierPusher]: treesize reduction 28, result has 3.4 percent of original size [2021-02-22 02:02:06,666 WARN L147 QuantifierPusher]: treesize reduction 28, result has 3.4 percent of original size 1 [2021-02-22 02:02:06,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503833913] [2021-02-22 02:02:06,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:02:06,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-22 02:02:06,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294139520] [2021-02-22 02:02:06,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-22 02:02:06,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:02:06,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-22 02:02:06,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-02-22 02:02:06,670 INFO L87 Difference]: Start difference. First operand 672 states and 788 transitions. Second operand 22 states. [2021-02-22 02:02:07,210 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 97 [2021-02-22 02:02:07,508 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 99 [2021-02-22 02:02:07,818 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 97 [2021-02-22 02:02:08,120 WARN L202 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 104 [2021-02-22 02:02:08,386 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 104 [2021-02-22 02:02:08,668 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 106 [2021-02-22 02:02:09,052 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 126 [2021-02-22 02:02:09,652 WARN L202 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 129 [2021-02-22 02:02:09,998 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-22 02:02:10,283 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2021-02-22 02:02:11,685 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-02-22 02:02:11,876 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-22 02:02:12,038 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-02-22 02:02:12,312 WARN L202 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-02-22 02:02:12,668 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-02-22 02:02:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:02:19,520 INFO L93 Difference]: Finished difference Result 2257 states and 2833 transitions. [2021-02-22 02:02:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-22 02:02:19,525 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 166 [2021-02-22 02:02:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:02:19,542 INFO L225 Difference]: With dead ends: 2257 [2021-02-22 02:02:19,542 INFO L226 Difference]: Without dead ends: 1617 [2021-02-22 02:02:19,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=352, Invalid=1628, Unknown=0, NotChecked=0, Total=1980 [2021-02-22 02:02:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-02-22 02:02:19,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1362. [2021-02-22 02:02:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2021-02-22 02:02:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1707 transitions. [2021-02-22 02:02:19,940 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1707 transitions. Word has length 166 [2021-02-22 02:02:19,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:02:19,941 INFO L480 AbstractCegarLoop]: Abstraction has 1362 states and 1707 transitions. [2021-02-22 02:02:19,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-22 02:02:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1707 transitions. [2021-02-22 02:02:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-02-22 02:02:19,948 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:02:19,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:02:19,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 02:02:19,949 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:02:19,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:02:19,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1216040409, now seen corresponding path program 1 times [2021-02-22 02:02:19,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:02:19,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439072] [2021-02-22 02:02:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:02:20,001 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 27