/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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:28:36,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:28:36,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:28:36,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:28:36,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:28:36,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:28:36,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:28:36,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:28:36,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:28:36,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:28:36,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:28:36,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:28:36,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:28:36,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:28:36,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:28:36,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:28:36,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:28:36,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:28:36,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:28:36,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:28:36,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:28:36,555 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:28:36,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:28:36,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:28:36,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:28:36,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:28:36,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:28:36,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:28:36,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:28:36,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:28:36,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:28:36,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:28:36,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:28:36,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:28:36,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:28:36,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:28:36,560 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:28:36,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:28:36,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:28:36,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:28:36,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:28:36,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:28:36,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:28:36,561 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:28:36,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:28:36,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:28:36,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:28:36,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:28:36,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:28:36,992 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:28:36,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2021-02-24 04:28:37,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a391bad30/9a455097cc5b4f539cf59b06e0eb3a75/FLAGee36f0185 [2021-02-24 04:28:37,886 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:28:37,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2021-02-24 04:28:37,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a391bad30/9a455097cc5b4f539cf59b06e0eb3a75/FLAGee36f0185 [2021-02-24 04:28:38,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a391bad30/9a455097cc5b4f539cf59b06e0eb3a75 [2021-02-24 04:28:38,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:28:38,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:28:38,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:28:38,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:28:38,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:28:38,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:28:38" (1/1) ... [2021-02-24 04:28:38,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161c30de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38, skipping insertion in model container [2021-02-24 04:28:38,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:28:38" (1/1) ... [2021-02-24 04:28:38,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:28:38,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:28:38,628 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_label52.c[21213,21226] [2021-02-24 04:28:38,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:28:38,680 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:28:38,789 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_label52.c[21213,21226] [2021-02-24 04:28:38,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:28:38,832 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:28:38,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38 WrapperNode [2021-02-24 04:28:38,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:28:38,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:28:38,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:28:38,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:28:38,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38" (1/1) ... [2021-02-24 04:28:38,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38" (1/1) ... [2021-02-24 04:28:38,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38" (1/1) ... [2021-02-24 04:28:38,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38" (1/1) ... [2021-02-24 04:28:38,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38" (1/1) ... [2021-02-24 04:28:39,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38" (1/1) ... [2021-02-24 04:28:39,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38" (1/1) ... [2021-02-24 04:28:39,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:28:39,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:28:39,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:28:39,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:28:39,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38" (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 [2021-02-24 04:28:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:28:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:28:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:28:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-24 04:28:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:28:39,140 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-24 04:28:39,140 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:28:39,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:28:39,140 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:28:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:28:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:28:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-24 04:28:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:28:39,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:28:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:28:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:28:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:28:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:28:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:28:41,159 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:28:41,159 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:28:41,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:28:41 BoogieIcfgContainer [2021-02-24 04:28:41,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:28:41,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:28:41,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:28:41,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:28:41,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:28:38" (1/3) ... [2021-02-24 04:28:41,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0cb498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:28:41, skipping insertion in model container [2021-02-24 04:28:41,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:28:38" (2/3) ... [2021-02-24 04:28:41,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0cb498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:28:41, skipping insertion in model container [2021-02-24 04:28:41,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:28:41" (3/3) ... [2021-02-24 04:28:41,173 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2021-02-24 04:28:41,181 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:28:41,187 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:28:41,207 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:28:41,233 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:28:41,234 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:28:41,234 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:28:41,234 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:28:41,234 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:28:41,234 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:28:41,235 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:28:41,235 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:28:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states. [2021-02-24 04:28:41,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-02-24 04:28:41,292 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:28:41,293 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] [2021-02-24 04:28:41,294 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:28:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:28:41,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1917791830, now seen corresponding path program 1 times [2021-02-24 04:28:41,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:28:41,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593407963] [2021-02-24 04:28:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:28:41,435 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:28:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:28:41,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:41,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:28:41,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:41,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:28:41,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:41,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:28:41,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:41,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:28:42,120 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-02-24 04:28:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:28:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:28:42,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:42,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:28:42,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:42,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:28:42,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:28:42,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593407963] [2021-02-24 04:28:42,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:28:42,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:28:42,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324915072] [2021-02-24 04:28:42,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:28:42,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:28:42,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:28:42,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:28:42,319 INFO L87 Difference]: Start difference. First operand 534 states. Second operand 4 states. [2021-02-24 04:28:42,664 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-02-24 04:28:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:28:45,395 INFO L93 Difference]: Finished difference Result 1277 states and 1676 transitions. [2021-02-24 04:28:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:28:45,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2021-02-24 04:28:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:28:45,419 INFO L225 Difference]: With dead ends: 1277 [2021-02-24 04:28:45,419 INFO L226 Difference]: Without dead ends: 702 [2021-02-24 04:28:45,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:28:45,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-02-24 04:28:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 611. [2021-02-24 04:28:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2021-02-24 04:28:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 727 transitions. [2021-02-24 04:28:45,645 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 727 transitions. Word has length 162 [2021-02-24 04:28:45,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:28:45,650 INFO L480 AbstractCegarLoop]: Abstraction has 611 states and 727 transitions. [2021-02-24 04:28:45,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:28:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 727 transitions. [2021-02-24 04:28:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-02-24 04:28:45,658 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:28:45,659 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:28:45,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:28:45,659 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:28:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:28:45,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1121446959, now seen corresponding path program 1 times [2021-02-24 04:28:45,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:28:45,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234267973] [2021-02-24 04:28:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:28:45,721 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-24 04:28:45,744 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-24 04:28:45,753 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-24 04:28:45,758 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-24 04:28:45,796 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-24 04:28:45,809 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-24 04:28:45,815 WARN L141 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size [2021-02-24 04:28:45,820 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-24 04:28:45,825 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:45,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:45,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:45,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:28:45,834 WARN L147 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size 84 [2021-02-24 04:28:45,837 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-24 04:28:45,843 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-24 04:28:45,846 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-24 04:28:45,851 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-24 04:28:45,883 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-24 04:28:45,886 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-24 04:28:45,890 WARN L141 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size [2021-02-24 04:28:45,892 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-24 04:28:45,893 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:45,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:45,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:45,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:28:45,900 WARN L147 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size 84 [2021-02-24 04:28:45,903 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-24 04:28:45,907 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-24 04:28:45,910 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-24 04:28:45,915 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-24 04:28:45,947 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-24 04:28:45,950 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-24 04:28:45,953 WARN L141 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size [2021-02-24 04:28:45,955 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-24 04:28:45,957 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:45,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:45,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:45,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:28:45,963 WARN L147 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size 84 [2021-02-24 04:28:45,965 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-24 04:28:45,970 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-24 04:28:45,973 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-24 04:28:45,977 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-24 04:28:46,042 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-24 04:28:46,044 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-24 04:28:46,048 WARN L141 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size [2021-02-24 04:28:46,050 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-24 04:28:46,052 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:28:46,057 WARN L147 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size 84 [2021-02-24 04:28:46,058 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:28:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:28:46,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:28:46,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:28:46,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:28:46,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:28:46,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:28:46,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:28:46,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:28:46,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:28:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:28:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:28:46,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:28:46,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:28:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:28:46,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-24 04:28:46,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:28:46,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-02-24 04:28:46,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:28:46,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-02-24 04:28:46,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:28:46,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-02-24 04:28:46,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:28:46,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-02-24 04:28:46,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-02-24 04:28:46,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:28:46,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-02-24 04:28:46,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-24 04:28:46,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:28:46,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-02-24 04:28:46,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-02-24 04:28:46,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:28:46,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-02-24 04:28:46,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-02-24 04:28:46,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-02-24 04:28:46,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-02-24 04:28:46,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-02-24 04:28:46,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:46,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:46,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-02-24 04:28:46,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-02-24 04:28:47,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:47,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-02-24 04:28:47,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-02-24 04:28:47,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:47,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-02-24 04:28:47,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-02-24 04:28:47,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:47,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-02-24 04:28:47,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-02-24 04:28:47,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:47,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-02-24 04:28:47,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-02-24 04:28:47,441 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2021-02-24 04:28:47,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:47,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-02-24 04:28:47,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-02-24 04:28:47,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:47,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-02-24 04:28:47,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-02-24 04:28:47,812 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-02-24 04:28:47,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:28:47,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:47,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-02-24 04:28:47,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289 [2021-02-24 04:28:48,181 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2021-02-24 04:28:48,194 WARN L141 QuantifierPusher]: treesize reduction 204, result has 27.9 percent of original size [2021-02-24 04:28:48,199 WARN L147 QuantifierPusher]: treesize reduction 204, result has 27.9 percent of original size 79 [2021-02-24 04:28:48,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:48,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:28:48,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:48,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:28:48,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:48,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:28:48,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:48,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-24 04:28:48,486 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 04:28:48,487 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 04:28:48,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:48,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:28:48,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:28:48,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:28:48,621 WARN L141 QuantifierPusher]: treesize reduction 30, result has 3.2 percent of original size [2021-02-24 04:28:48,622 WARN L147 QuantifierPusher]: treesize reduction 30, result has 3.2 percent of original size 1 [2021-02-24 04:28:48,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234267973] [2021-02-24 04:28:48,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:28:48,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-24 04:28:48,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021247299] [2021-02-24 04:28:48,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-24 04:28:48,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:28:48,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-24 04:28:48,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-02-24 04:28:48,626 INFO L87 Difference]: Start difference. First operand 611 states and 727 transitions. Second operand 24 states. [2021-02-24 04:28:49,157 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 97 [2021-02-24 04:28:49,419 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 99 [2021-02-24 04:28:49,662 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2021-02-24 04:28:49,922 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 103 [2021-02-24 04:28:50,205 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 103 [2021-02-24 04:28:50,461 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2021-02-24 04:28:50,790 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 124 [2021-02-24 04:28:51,264 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 131 [2021-02-24 04:28:51,516 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2021-02-24 04:28:51,992 WARN L202 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 134 [2021-02-24 04:28:52,644 WARN L202 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 137 [2021-02-24 04:28:53,394 WARN L202 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 140 [2021-02-24 04:28:53,680 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2021-02-24 04:28:53,889 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-24 04:28:54,929 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2021-02-24 04:28:55,681 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-02-24 04:28:56,003 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-02-24 04:28:56,237 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-24 04:28:56,549 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-02-24 04:28:56,893 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2021-02-24 04:28:57,281 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2021-02-24 04:28:57,694 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2021-02-24 04:29:05,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:29:05,623 INFO L93 Difference]: Finished difference Result 1244 states and 1515 transitions. [2021-02-24 04:29:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-24 04:29:05,624 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 183 [2021-02-24 04:29:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:29:05,634 INFO L225 Difference]: With dead ends: 1244 [2021-02-24 04:29:05,634 INFO L226 Difference]: Without dead ends: 1242 [2021-02-24 04:29:05,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=593, Invalid=2377, Unknown=0, NotChecked=0, Total=2970 [2021-02-24 04:29:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-02-24 04:29:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1062. [2021-02-24 04:29:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2021-02-24 04:29:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1320 transitions. [2021-02-24 04:29:05,912 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1320 transitions. Word has length 183 [2021-02-24 04:29:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:29:05,913 INFO L480 AbstractCegarLoop]: Abstraction has 1062 states and 1320 transitions. [2021-02-24 04:29:05,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-24 04:29:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1320 transitions. [2021-02-24 04:29:05,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-02-24 04:29:05,919 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:29:05,919 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:29:05,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:29:05,920 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:29:05,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:29:05,921 INFO L82 PathProgramCache]: Analyzing trace with hash 462983122, now seen corresponding path program 1 times [2021-02-24 04:29:05,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:29:05,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080010604] [2021-02-24 04:29:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:29:05,953 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11