/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:05:41,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:05:41,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:05:41,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:05:41,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:05:41,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:05:41,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:05:41,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:05:41,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:05:41,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:05:41,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:05:41,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:05:41,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:05:41,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:05:41,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:05:41,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:05:41,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:05:41,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:05:41,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:05:41,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:05:41,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:05:41,674 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:05:41,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:05:41,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:05:41,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:05:41,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:05:41,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:05:41,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:05:41,676 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:05:41,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:05:41,676 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:05:41,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:05:41,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:05:41,677 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:05:41,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:05:41,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:05:41,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:05:41,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:05:41,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:05:41,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:05:41,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:05:42,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:05:42,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:05:42,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:05:42,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:05:42,066 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:05:42,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2021-02-24 00:05:42,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81fac0fea/c7bc0bb5cbb64f16b47cc0f441d0eba2/FLAG9f88dfb5d [2021-02-24 00:05:42,918 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:05:42,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2021-02-24 00:05:42,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81fac0fea/c7bc0bb5cbb64f16b47cc0f441d0eba2/FLAG9f88dfb5d [2021-02-24 00:05:43,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81fac0fea/c7bc0bb5cbb64f16b47cc0f441d0eba2 [2021-02-24 00:05:43,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:05:43,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:05:43,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:05:43,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:05:43,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:05:43,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:05:43" (1/1) ... [2021-02-24 00:05:43,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162b119b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43, skipping insertion in model container [2021-02-24 00:05:43,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:05:43" (1/1) ... [2021-02-24 00:05:43,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:05:43,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:05:43,489 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/Problem14_label24.c[4340,4353] [2021-02-24 00:05:43,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:05:43,754 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:05:43,782 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/Problem14_label24.c[4340,4353] [2021-02-24 00:05:43,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:05:43,977 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:05:43,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43 WrapperNode [2021-02-24 00:05:43,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:05:43,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:05:43,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:05:43,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:05:43,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43" (1/1) ... [2021-02-24 00:05:43,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43" (1/1) ... [2021-02-24 00:05:44,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43" (1/1) ... [2021-02-24 00:05:44,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43" (1/1) ... [2021-02-24 00:05:44,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43" (1/1) ... [2021-02-24 00:05:44,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43" (1/1) ... [2021-02-24 00:05:44,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43" (1/1) ... [2021-02-24 00:05:44,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:05:44,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:05:44,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:05:44,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:05:44,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43" (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 00:05:44,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:05:44,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:05:44,237 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:05:44,238 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-24 00:05:44,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:05:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-24 00:05:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:05:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:05:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:05:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:05:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:05:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-24 00:05:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:05:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:05:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:05:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:05:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:05:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:05:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:05:46,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:05:46,500 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:05:46,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:05:46 BoogieIcfgContainer [2021-02-24 00:05:46,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:05:46,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:05:46,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:05:46,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:05:46,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:05:43" (1/3) ... [2021-02-24 00:05:46,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181a6d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:05:46, skipping insertion in model container [2021-02-24 00:05:46,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:05:43" (2/3) ... [2021-02-24 00:05:46,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181a6d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:05:46, skipping insertion in model container [2021-02-24 00:05:46,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:05:46" (3/3) ... [2021-02-24 00:05:46,511 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2021-02-24 00:05:46,518 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:05:46,524 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:05:46,542 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:05:46,566 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:05:46,566 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:05:46,566 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:05:46,566 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:05:46,567 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:05:46,567 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:05:46,567 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:05:46,567 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:05:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states. [2021-02-24 00:05:46,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-24 00:05:46,619 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:05:46,620 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] [2021-02-24 00:05:46,620 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:05:46,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:05:46,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1077400910, now seen corresponding path program 1 times [2021-02-24 00:05:46,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:05:46,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352655178] [2021-02-24 00:05:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:05:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:05:46,989 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-24 00:05:46,990 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-24 00:05:47,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:47,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:05:47,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:47,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:05:47,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:47,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:05:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:05:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:05:47,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:47,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:05:47,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:47,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:05:47,174 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 00:05:47,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352655178] [2021-02-24 00:05:47,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:05:47,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:05:47,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299654191] [2021-02-24 00:05:47,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:05:47,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:05:47,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:05:47,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:05:47,198 INFO L87 Difference]: Start difference. First operand 687 states. Second operand 5 states. [2021-02-24 00:05:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:05:51,369 INFO L93 Difference]: Finished difference Result 1775 states and 2502 transitions. [2021-02-24 00:05:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:05:51,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2021-02-24 00:05:51,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:05:51,404 INFO L225 Difference]: With dead ends: 1775 [2021-02-24 00:05:51,405 INFO L226 Difference]: Without dead ends: 1033 [2021-02-24 00:05:51,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:05:51,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-02-24 00:05:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1003. [2021-02-24 00:05:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2021-02-24 00:05:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1351 transitions. [2021-02-24 00:05:51,704 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1351 transitions. Word has length 68 [2021-02-24 00:05:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:05:51,706 INFO L480 AbstractCegarLoop]: Abstraction has 1003 states and 1351 transitions. [2021-02-24 00:05:51,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:05:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1351 transitions. [2021-02-24 00:05:51,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-02-24 00:05:51,723 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:05:51,724 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, 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] [2021-02-24 00:05:51,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:05:51,725 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:05:51,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:05:51,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1480357857, now seen corresponding path program 1 times [2021-02-24 00:05:51,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:05:51,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928741735] [2021-02-24 00:05:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:05:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:05:51,912 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-24 00:05:51,913 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-24 00:05:51,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:51,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:05:51,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:51,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:05:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:05:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:05:52,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:52,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:05:52,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:52,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:05:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:05:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:05:52,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:52,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:05:52,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:52,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:05:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:05:52,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928741735] [2021-02-24 00:05:52,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:05:52,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 00:05:52,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725498199] [2021-02-24 00:05:52,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:05:52,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:05:52,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:05:52,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:05:52,208 INFO L87 Difference]: Start difference. First operand 1003 states and 1351 transitions. Second operand 8 states. [2021-02-24 00:05:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:05:55,595 INFO L93 Difference]: Finished difference Result 2236 states and 3082 transitions. [2021-02-24 00:05:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:05:55,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2021-02-24 00:05:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:05:55,652 INFO L225 Difference]: With dead ends: 2236 [2021-02-24 00:05:55,652 INFO L226 Difference]: Without dead ends: 1256 [2021-02-24 00:05:55,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:05:55,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-02-24 00:05:55,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1009. [2021-02-24 00:05:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2021-02-24 00:05:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1261 transitions. [2021-02-24 00:05:55,838 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1261 transitions. Word has length 152 [2021-02-24 00:05:55,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:05:55,847 INFO L480 AbstractCegarLoop]: Abstraction has 1009 states and 1261 transitions. [2021-02-24 00:05:55,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:05:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1261 transitions. [2021-02-24 00:05:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-02-24 00:05:55,855 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:05:55,856 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, 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] [2021-02-24 00:05:55,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:05:55,857 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:05:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:05:55,858 INFO L82 PathProgramCache]: Analyzing trace with hash -921428765, now seen corresponding path program 1 times [2021-02-24 00:05:55,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:05:55,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390057319] [2021-02-24 00:05:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:05:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:05:55,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:55,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:05:55,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:55,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:05:55,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:55,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:05:55,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:56,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:05:56,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:05:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:05:56,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:56,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:05:56,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:05:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:05:56,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:56,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:05:56,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:56,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:05:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:05:56,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390057319] [2021-02-24 00:05:56,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:05:56,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:05:56,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70805814] [2021-02-24 00:05:56,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:05:56,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:05:56,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:05:56,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:05:56,144 INFO L87 Difference]: Start difference. First operand 1009 states and 1261 transitions. Second operand 5 states. [2021-02-24 00:05:59,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:05:59,554 INFO L93 Difference]: Finished difference Result 2718 states and 3501 transitions. [2021-02-24 00:05:59,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:05:59,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2021-02-24 00:05:59,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:05:59,571 INFO L225 Difference]: With dead ends: 2718 [2021-02-24 00:05:59,572 INFO L226 Difference]: Without dead ends: 1732 [2021-02-24 00:05:59,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:05:59,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2021-02-24 00:05:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1393. [2021-02-24 00:05:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2021-02-24 00:05:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1733 transitions. [2021-02-24 00:05:59,816 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1733 transitions. Word has length 162 [2021-02-24 00:05:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:05:59,817 INFO L480 AbstractCegarLoop]: Abstraction has 1393 states and 1733 transitions. [2021-02-24 00:05:59,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:05:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1733 transitions. [2021-02-24 00:05:59,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-02-24 00:05:59,824 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:05:59,824 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:05:59,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:05:59,825 INFO L428 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:05:59,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:05:59,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1235622200, now seen corresponding path program 1 times [2021-02-24 00:05:59,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:05:59,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479394578] [2021-02-24 00:05:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:05:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:05:59,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:59,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:05:59,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:59,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:05:59,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:59,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:05:59,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:59,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:05:59,971 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-24 00:05:59,972 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-24 00:05:59,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:05:59,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:00,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:06:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:00,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:00,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:00,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:06:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:00,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:00,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:00,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:00,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:00,119 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:06:00,120 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:06:00,135 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-24 00:06:00,136 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-24 00:06:00,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-24 00:06:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:00,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:00,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:06:00,282 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size [2021-02-24 00:06:00,284 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.6 percent of original size 28 [2021-02-24 00:06:00,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:00,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:06:00,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:00,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 00:06:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 117 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:06:00,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479394578] [2021-02-24 00:06:00,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:06:00,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:06:00,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027934836] [2021-02-24 00:06:00,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:06:00,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:06:00,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:06:00,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:06:00,919 INFO L87 Difference]: Start difference. First operand 1393 states and 1733 transitions. Second operand 13 states. [2021-02-24 00:06:01,277 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2021-02-24 00:06:01,662 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2021-02-24 00:06:02,377 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2021-02-24 00:06:03,448 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-02-24 00:06:03,974 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2021-02-24 00:06:07,298 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-02-24 00:06:08,126 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2021-02-24 00:06:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:06:09,959 INFO L93 Difference]: Finished difference Result 5101 states and 6978 transitions. [2021-02-24 00:06:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-24 00:06:09,960 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 275 [2021-02-24 00:06:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:06:10,032 INFO L225 Difference]: With dead ends: 5101 [2021-02-24 00:06:10,033 INFO L226 Difference]: Without dead ends: 3731 [2021-02-24 00:06:10,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-02-24 00:06:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-02-24 00:06:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3097. [2021-02-24 00:06:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3097 states. [2021-02-24 00:06:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 3845 transitions. [2021-02-24 00:06:10,591 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 3845 transitions. Word has length 275 [2021-02-24 00:06:10,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:06:10,592 INFO L480 AbstractCegarLoop]: Abstraction has 3097 states and 3845 transitions. [2021-02-24 00:06:10,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:06:10,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 3845 transitions. [2021-02-24 00:06:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-02-24 00:06:10,600 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:06:10,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:06:10,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:06:10,601 INFO L428 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:06:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:06:10,601 INFO L82 PathProgramCache]: Analyzing trace with hash 398624379, now seen corresponding path program 1 times [2021-02-24 00:06:10,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:06:10,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013987793] [2021-02-24 00:06:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:06:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:10,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:10,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:10,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:10,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:06:10,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:10,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:06:10,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:10,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:06:10,720 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-24 00:06:10,721 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-24 00:06:10,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:10,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:06:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:10,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:10,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:06:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:10,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:10,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:10,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:10,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:10,880 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:06:10,880 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:06:10,897 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-24 00:06:10,898 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-24 00:06:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-24 00:06:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:10,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:10,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:06:10,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:10,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 00:06:11,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:11,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:06:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 117 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:06:11,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013987793] [2021-02-24 00:06:11,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:06:11,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:06:11,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344331004] [2021-02-24 00:06:11,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:06:11,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:06:11,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:06:11,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:06:11,374 INFO L87 Difference]: Start difference. First operand 3097 states and 3845 transitions. Second operand 12 states. [2021-02-24 00:06:11,966 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-02-24 00:06:17,714 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-02-24 00:06:19,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:06:19,832 INFO L93 Difference]: Finished difference Result 8886 states and 11803 transitions. [2021-02-24 00:06:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-24 00:06:19,832 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 293 [2021-02-24 00:06:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:06:19,902 INFO L225 Difference]: With dead ends: 8886 [2021-02-24 00:06:19,902 INFO L226 Difference]: Without dead ends: 5812 [2021-02-24 00:06:19,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2021-02-24 00:06:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2021-02-24 00:06:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 4325. [2021-02-24 00:06:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4325 states. [2021-02-24 00:06:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4325 states to 4325 states and 5283 transitions. [2021-02-24 00:06:20,888 INFO L78 Accepts]: Start accepts. Automaton has 4325 states and 5283 transitions. Word has length 293 [2021-02-24 00:06:20,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:06:20,889 INFO L480 AbstractCegarLoop]: Abstraction has 4325 states and 5283 transitions. [2021-02-24 00:06:20,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:06:20,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4325 states and 5283 transitions. [2021-02-24 00:06:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-02-24 00:06:20,900 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:06:20,901 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:06:20,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:06:20,901 INFO L428 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:06:20,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:06:20,902 INFO L82 PathProgramCache]: Analyzing trace with hash 923389585, now seen corresponding path program 1 times [2021-02-24 00:06:20,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:06:20,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189534865] [2021-02-24 00:06:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:06:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:20,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:20,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:06:20,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:20,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:06:20,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:20,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:21,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:06:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:21,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:21,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:21,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:21,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:06:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:06:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:21,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:21,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:21,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:21,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:06:21,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:21,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-02-24 00:06:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:21,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:21,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 88 proven. 69 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-24 00:06:21,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189534865] [2021-02-24 00:06:21,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:06:21,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:06:21,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258514430] [2021-02-24 00:06:21,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:06:21,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:06:21,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:06:21,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:06:21,442 INFO L87 Difference]: Start difference. First operand 4325 states and 5283 transitions. Second operand 8 states. [2021-02-24 00:06:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:06:25,417 INFO L93 Difference]: Finished difference Result 9314 states and 11492 transitions. [2021-02-24 00:06:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:06:25,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 341 [2021-02-24 00:06:25,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:06:25,451 INFO L225 Difference]: With dead ends: 9314 [2021-02-24 00:06:25,451 INFO L226 Difference]: Without dead ends: 5012 [2021-02-24 00:06:25,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:06:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2021-02-24 00:06:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 4771. [2021-02-24 00:06:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4771 states. [2021-02-24 00:06:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 5807 transitions. [2021-02-24 00:06:26,359 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 5807 transitions. Word has length 341 [2021-02-24 00:06:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:06:26,360 INFO L480 AbstractCegarLoop]: Abstraction has 4771 states and 5807 transitions. [2021-02-24 00:06:26,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:06:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 5807 transitions. [2021-02-24 00:06:26,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-02-24 00:06:26,376 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:06:26,376 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2021-02-24 00:06:26,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:06:26,377 INFO L428 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:06:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:06:26,377 INFO L82 PathProgramCache]: Analyzing trace with hash 745776750, now seen corresponding path program 1 times [2021-02-24 00:06:26,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:06:26,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100215525] [2021-02-24 00:06:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:06:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:26,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:26,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:26,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:26,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:06:26,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:26,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:26,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:06:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:26,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:26,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:26,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:06:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:26,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:26,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:26,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:26,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:06:26,590 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 00:06:26,591 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 00:06:26,601 WARN L141 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-02-24 00:06:26,603 WARN L147 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size 10 [2021-02-24 00:06:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 00:06:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:26,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:26,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:26,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:26,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:26,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-02-24 00:06:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:26,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:26,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 240 proven. 73 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-02-24 00:06:27,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100215525] [2021-02-24 00:06:27,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:06:27,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:06:27,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937962124] [2021-02-24 00:06:27,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:06:27,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:06:27,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:06:27,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:06:27,068 INFO L87 Difference]: Start difference. First operand 4771 states and 5807 transitions. Second operand 9 states. [2021-02-24 00:06:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:06:34,696 INFO L93 Difference]: Finished difference Result 12378 states and 15690 transitions. [2021-02-24 00:06:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:06:34,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 447 [2021-02-24 00:06:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:06:34,748 INFO L225 Difference]: With dead ends: 12378 [2021-02-24 00:06:34,748 INFO L226 Difference]: Without dead ends: 5527 [2021-02-24 00:06:34,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:06:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5527 states. [2021-02-24 00:06:35,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5527 to 5515. [2021-02-24 00:06:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5515 states. [2021-02-24 00:06:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 6971 transitions. [2021-02-24 00:06:35,802 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 6971 transitions. Word has length 447 [2021-02-24 00:06:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:06:35,803 INFO L480 AbstractCegarLoop]: Abstraction has 5515 states and 6971 transitions. [2021-02-24 00:06:35,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:06:35,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 6971 transitions. [2021-02-24 00:06:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2021-02-24 00:06:35,825 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:06:35,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:06:35,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:06:35,826 INFO L428 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:06:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:06:35,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2129722042, now seen corresponding path program 1 times [2021-02-24 00:06:35,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:06:35,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467298232] [2021-02-24 00:06:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:06:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:35,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:35,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:35,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:35,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:35,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:35,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:06:35,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:35,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:36,099 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-02-24 00:06:36,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:06:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:36,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:36,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:36,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:36,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:06:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:06:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:36,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:36,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:36,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:36,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:06:36,172 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:06:36,173 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:06:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:06:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:36,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:36,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:36,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:36,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 00:06:36,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:36,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:06:36,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-02-24 00:06:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:36,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:36,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 254 proven. 73 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-02-24 00:06:36,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467298232] [2021-02-24 00:06:36,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:06:36,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:06:36,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655963693] [2021-02-24 00:06:36,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:06:36,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:06:36,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:06:36,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:06:36,681 INFO L87 Difference]: Start difference. First operand 5515 states and 6971 transitions. Second operand 10 states. [2021-02-24 00:06:37,357 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-02-24 00:06:38,991 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-02-24 00:06:40,492 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2021-02-24 00:06:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:06:44,573 INFO L93 Difference]: Finished difference Result 12333 states and 16126 transitions. [2021-02-24 00:06:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-24 00:06:44,574 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 459 [2021-02-24 00:06:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:06:44,655 INFO L225 Difference]: With dead ends: 12333 [2021-02-24 00:06:44,655 INFO L226 Difference]: Without dead ends: 6851 [2021-02-24 00:06:44,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=286, Invalid=836, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 00:06:44,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6851 states. [2021-02-24 00:06:46,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6851 to 6496. [2021-02-24 00:06:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6496 states. [2021-02-24 00:06:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6496 states to 6496 states and 8196 transitions. [2021-02-24 00:06:46,260 INFO L78 Accepts]: Start accepts. Automaton has 6496 states and 8196 transitions. Word has length 459 [2021-02-24 00:06:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:06:46,261 INFO L480 AbstractCegarLoop]: Abstraction has 6496 states and 8196 transitions. [2021-02-24 00:06:46,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:06:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6496 states and 8196 transitions. [2021-02-24 00:06:46,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-02-24 00:06:46,283 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:06:46,283 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:06:46,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:06:46,283 INFO L428 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:06:46,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:06:46,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2098877464, now seen corresponding path program 1 times [2021-02-24 00:06:46,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:06:46,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101469504] [2021-02-24 00:06:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:06:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:46,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:46,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:46,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:46,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:46,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:46,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:46,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:06:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:46,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:46,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:06:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:46,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:46,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:46,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:46,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:06:46,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-24 00:06:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:46,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:46,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:46,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:46,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:06:46,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-02-24 00:06:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:46,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:46,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 257 proven. 73 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-02-24 00:06:46,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101469504] [2021-02-24 00:06:46,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:06:46,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:06:46,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295072065] [2021-02-24 00:06:46,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:06:46,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:06:46,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:06:46,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:06:46,777 INFO L87 Difference]: Start difference. First operand 6496 states and 8196 transitions. Second operand 7 states. [2021-02-24 00:06:52,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:06:52,188 INFO L93 Difference]: Finished difference Result 13002 states and 16394 transitions. [2021-02-24 00:06:52,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:06:52,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2021-02-24 00:06:52,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:06:52,232 INFO L225 Difference]: With dead ends: 13002 [2021-02-24 00:06:52,233 INFO L226 Difference]: Without dead ends: 6539 [2021-02-24 00:06:52,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:06:52,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2021-02-24 00:06:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6498. [2021-02-24 00:06:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6498 states. [2021-02-24 00:06:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6498 states to 6498 states and 7870 transitions. [2021-02-24 00:06:53,647 INFO L78 Accepts]: Start accepts. Automaton has 6498 states and 7870 transitions. Word has length 464 [2021-02-24 00:06:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:06:53,648 INFO L480 AbstractCegarLoop]: Abstraction has 6498 states and 7870 transitions. [2021-02-24 00:06:53,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:06:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6498 states and 7870 transitions. [2021-02-24 00:06:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2021-02-24 00:06:53,669 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:06:53,670 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-02-24 00:06:53,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:06:53,670 INFO L428 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:06:53,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:06:53,671 INFO L82 PathProgramCache]: Analyzing trace with hash -466672222, now seen corresponding path program 1 times [2021-02-24 00:06:53,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:06:53,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224924095] [2021-02-24 00:06:53,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:06:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:53,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:53,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:53,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:53,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:06:53,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:53,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:53,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:06:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:53,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:53,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:06:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:53,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:53,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:53,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:53,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:06:53,863 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 00:06:53,863 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 00:06:53,875 WARN L141 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-02-24 00:06:53,875 WARN L147 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size 10 [2021-02-24 00:06:53,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-02-24 00:06:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:53,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:53,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:06:53,941 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-24 00:06:53,942 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 38 [2021-02-24 00:06:53,975 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:06:53,976 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 33 [2021-02-24 00:06:54,008 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-24 00:06:54,009 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 37 [2021-02-24 00:06:54,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:54,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:06:54,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:54,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:06:54,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-02-24 00:06:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:54,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:54,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:54,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2021-02-24 00:06:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:06:54,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:06:54,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:06:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 272 proven. 142 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-02-24 00:06:54,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224924095] [2021-02-24 00:06:54,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:06:54,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:06:54,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90192351] [2021-02-24 00:06:54,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:06:54,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:06:54,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:06:54,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:06:54,646 INFO L87 Difference]: Start difference. First operand 6498 states and 7870 transitions. Second operand 13 states. [2021-02-24 00:06:55,006 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2021-02-24 00:06:55,303 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2021-02-24 00:06:55,577 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-02-24 00:06:55,770 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2021-02-24 00:06:56,418 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2021-02-24 00:06:56,865 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-02-24 00:06:57,230 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2021-02-24 00:06:57,819 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2021-02-24 00:06:58,206 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2021-02-24 00:06:58,627 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2021-02-24 00:06:58,896 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-02-24 00:06:59,318 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2021-02-24 00:06:59,647 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2021-02-24 00:07:00,077 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2021-02-24 00:07:00,559 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2021-02-24 00:07:00,845 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2021-02-24 00:07:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:07:03,180 INFO L93 Difference]: Finished difference Result 13315 states and 16196 transitions. [2021-02-24 00:07:03,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-24 00:07:03,181 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 518 [2021-02-24 00:07:03,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:07:03,212 INFO L225 Difference]: With dead ends: 13315 [2021-02-24 00:07:03,212 INFO L226 Difference]: Without dead ends: 6524 [2021-02-24 00:07:03,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=345, Invalid=987, Unknown=0, NotChecked=0, Total=1332 [2021-02-24 00:07:03,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6524 states. [2021-02-24 00:07:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6524 to 6439. [2021-02-24 00:07:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6439 states. [2021-02-24 00:07:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6439 states to 6439 states and 7630 transitions. [2021-02-24 00:07:04,762 INFO L78 Accepts]: Start accepts. Automaton has 6439 states and 7630 transitions. Word has length 518 [2021-02-24 00:07:04,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:07:04,762 INFO L480 AbstractCegarLoop]: Abstraction has 6439 states and 7630 transitions. [2021-02-24 00:07:04,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:07:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6439 states and 7630 transitions. [2021-02-24 00:07:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2021-02-24 00:07:04,783 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:07:04,784 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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] [2021-02-24 00:07:04,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:07:04,784 INFO L428 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:07:04,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:07:04,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1985427505, now seen corresponding path program 1 times [2021-02-24 00:07:04,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:07:04,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663861030] [2021-02-24 00:07:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:07:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:04,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:04,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:04,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:04,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:04,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:04,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:04,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:04,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:07:04,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:04,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:04,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:07:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:04,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:04,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:04,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:04,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:07:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:07:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:05,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:05,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:05,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:05,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:05,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:07:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:05,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:05,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:05,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:05,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:05,047 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:07:05,047 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:07:05,058 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-24 00:07:05,059 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-24 00:07:05,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-24 00:07:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:05,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:05,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:05,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:05,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:05,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-02-24 00:07:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:05,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:05,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 388 proven. 77 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-02-24 00:07:05,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663861030] [2021-02-24 00:07:05,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:07:05,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:07:05,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912667517] [2021-02-24 00:07:05,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:07:05,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:07:05,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:07:05,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:07:05,402 INFO L87 Difference]: Start difference. First operand 6439 states and 7630 transitions. Second operand 9 states. [2021-02-24 00:07:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:07:11,757 INFO L93 Difference]: Finished difference Result 13653 states and 16310 transitions. [2021-02-24 00:07:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:07:11,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 541 [2021-02-24 00:07:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:07:11,787 INFO L225 Difference]: With dead ends: 13653 [2021-02-24 00:07:11,788 INFO L226 Difference]: Without dead ends: 4541 [2021-02-24 00:07:11,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:07:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2021-02-24 00:07:12,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4517. [2021-02-24 00:07:12,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4517 states. [2021-02-24 00:07:12,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 4805 transitions. [2021-02-24 00:07:12,769 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 4805 transitions. Word has length 541 [2021-02-24 00:07:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:07:12,770 INFO L480 AbstractCegarLoop]: Abstraction has 4517 states and 4805 transitions. [2021-02-24 00:07:12,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:07:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 4805 transitions. [2021-02-24 00:07:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2021-02-24 00:07:12,779 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:07:12,779 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-24 00:07:12,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 00:07:12,780 INFO L428 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:07:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:07:12,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1722718625, now seen corresponding path program 1 times [2021-02-24 00:07:12,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:07:12,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085339118] [2021-02-24 00:07:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:07:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:12,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:12,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:12,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:12,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:12,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:12,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:12,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:07:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:12,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:12,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:12,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:07:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:12,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:12,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:07:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:13,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:13,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:13,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:13,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:13,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-02-24 00:07:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:13,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:13,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:13,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:13,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:13,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:13,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:13,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2021-02-24 00:07:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:13,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:13,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 435 proven. 73 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-02-24 00:07:13,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085339118] [2021-02-24 00:07:13,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:07:13,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:07:13,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864930556] [2021-02-24 00:07:13,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:07:13,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:07:13,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:07:13,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:07:13,448 INFO L87 Difference]: Start difference. First operand 4517 states and 4805 transitions. Second operand 8 states. [2021-02-24 00:07:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:07:16,295 INFO L93 Difference]: Finished difference Result 10193 states and 10909 transitions. [2021-02-24 00:07:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:07:16,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 584 [2021-02-24 00:07:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:07:16,325 INFO L225 Difference]: With dead ends: 10193 [2021-02-24 00:07:16,325 INFO L226 Difference]: Without dead ends: 5888 [2021-02-24 00:07:16,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:07:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2021-02-24 00:07:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5488. [2021-02-24 00:07:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5488 states. [2021-02-24 00:07:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 5861 transitions. [2021-02-24 00:07:17,544 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 5861 transitions. Word has length 584 [2021-02-24 00:07:17,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:07:17,545 INFO L480 AbstractCegarLoop]: Abstraction has 5488 states and 5861 transitions. [2021-02-24 00:07:17,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:07:17,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 5861 transitions. [2021-02-24 00:07:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2021-02-24 00:07:17,557 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:07:17,558 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:07:17,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 00:07:17,558 INFO L428 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:07:17,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:07:17,559 INFO L82 PathProgramCache]: Analyzing trace with hash 30926801, now seen corresponding path program 1 times [2021-02-24 00:07:17,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:07:17,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412968692] [2021-02-24 00:07:17,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:07:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:17,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:17,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:17,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:07:17,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:17,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:07:17,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:17,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:07:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:17,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:17,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:07:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:07:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:17,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:17,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:17,851 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:07:17,852 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:07:17,864 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-24 00:07:17,864 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-24 00:07:17,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-24 00:07:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:17,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:17,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-02-24 00:07:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:18,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:18,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:18,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:18,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:18,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2021-02-24 00:07:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:18,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:18,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:18,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:18,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:07:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 407 proven. 42 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-02-24 00:07:18,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412968692] [2021-02-24 00:07:18,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:07:18,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:07:18,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363316023] [2021-02-24 00:07:18,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:07:18,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:07:18,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:07:18,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:07:18,548 INFO L87 Difference]: Start difference. First operand 5488 states and 5861 transitions. Second operand 11 states. [2021-02-24 00:07:19,747 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2021-02-24 00:07:25,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:07:25,894 INFO L93 Difference]: Finished difference Result 10670 states and 11386 transitions. [2021-02-24 00:07:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-24 00:07:25,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 670 [2021-02-24 00:07:25,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:07:25,925 INFO L225 Difference]: With dead ends: 10670 [2021-02-24 00:07:25,925 INFO L226 Difference]: Without dead ends: 5394 [2021-02-24 00:07:25,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=352, Invalid=1370, Unknown=0, NotChecked=0, Total=1722 [2021-02-24 00:07:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5394 states. [2021-02-24 00:07:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5394 to 4983. [2021-02-24 00:07:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4983 states. [2021-02-24 00:07:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 5209 transitions. [2021-02-24 00:07:26,913 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 5209 transitions. Word has length 670 [2021-02-24 00:07:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:07:26,913 INFO L480 AbstractCegarLoop]: Abstraction has 4983 states and 5209 transitions. [2021-02-24 00:07:26,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:07:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 5209 transitions. [2021-02-24 00:07:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2021-02-24 00:07:26,920 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:07:26,920 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:07:26,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 00:07:26,921 INFO L428 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:07:26,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:07:26,921 INFO L82 PathProgramCache]: Analyzing trace with hash -196916433, now seen corresponding path program 1 times [2021-02-24 00:07:26,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:07:26,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908532045] [2021-02-24 00:07:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:07:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:27,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:27,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:27,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:27,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:07:27,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:27,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:07:27,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:07:27,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:07:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:27,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:27,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:07:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:07:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:27,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:27,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:27,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:07:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:27,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:27,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:27,393 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:07:27,393 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:07:27,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-02-24 00:07:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:27,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:27,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-02-24 00:07:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:27,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2021-02-24 00:07:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:27,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:27,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:27,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 230 proven. 98 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2021-02-24 00:07:27,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908532045] [2021-02-24 00:07:27,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:07:27,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:07:27,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829494161] [2021-02-24 00:07:27,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:07:27,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:07:27,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:07:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:07:27,883 INFO L87 Difference]: Start difference. First operand 4983 states and 5209 transitions. Second operand 9 states. [2021-02-24 00:07:28,594 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-02-24 00:07:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:07:33,685 INFO L93 Difference]: Finished difference Result 10166 states and 10636 transitions. [2021-02-24 00:07:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 00:07:33,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 770 [2021-02-24 00:07:33,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:07:33,702 INFO L225 Difference]: With dead ends: 10166 [2021-02-24 00:07:33,702 INFO L226 Difference]: Without dead ends: 5186 [2021-02-24 00:07:33,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:07:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2021-02-24 00:07:34,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5157. [2021-02-24 00:07:34,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5157 states. [2021-02-24 00:07:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 5359 transitions. [2021-02-24 00:07:34,856 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 5359 transitions. Word has length 770 [2021-02-24 00:07:34,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:07:34,856 INFO L480 AbstractCegarLoop]: Abstraction has 5157 states and 5359 transitions. [2021-02-24 00:07:34,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:07:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 5359 transitions. [2021-02-24 00:07:34,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2021-02-24 00:07:34,863 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:07:34,864 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:07:34,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-24 00:07:34,864 INFO L428 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:07:34,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:07:34,865 INFO L82 PathProgramCache]: Analyzing trace with hash -229126226, now seen corresponding path program 1 times [2021-02-24 00:07:34,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:07:34,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870180725] [2021-02-24 00:07:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:07:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:35,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:35,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:35,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:35,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:07:35,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:35,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:07:35,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:07:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:35,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:35,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:07:35,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:07:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:35,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:35,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:07:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:35,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:35,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:35,219 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:07:35,219 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:07:35,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-02-24 00:07:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:35,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-02-24 00:07:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:35,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2021-02-24 00:07:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:35,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:35,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:07:35,354 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-02-24 00:07:35,354 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size 10 [2021-02-24 00:07:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2021-02-24 00:07:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:35,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:35,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:07:35,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:35,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:07:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 668 proven. 99 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2021-02-24 00:07:35,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870180725] [2021-02-24 00:07:35,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:07:35,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:07:35,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444886692] [2021-02-24 00:07:35,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:07:35,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:07:35,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:07:35,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:07:35,947 INFO L87 Difference]: Start difference. First operand 5157 states and 5359 transitions. Second operand 13 states. [2021-02-24 00:07:36,766 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2021-02-24 00:07:38,355 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-02-24 00:07:39,605 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-02-24 00:07:41,296 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-02-24 00:07:41,860 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2021-02-24 00:07:42,933 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-02-24 00:07:44,749 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-02-24 00:07:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:07:45,342 INFO L93 Difference]: Finished difference Result 10520 states and 10937 transitions. [2021-02-24 00:07:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-24 00:07:45,343 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 839 [2021-02-24 00:07:45,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:07:45,356 INFO L225 Difference]: With dead ends: 10520 [2021-02-24 00:07:45,356 INFO L226 Difference]: Without dead ends: 5173 [2021-02-24 00:07:45,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=420, Invalid=1650, Unknown=0, NotChecked=0, Total=2070 [2021-02-24 00:07:45,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5173 states. [2021-02-24 00:07:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5173 to 4968. [2021-02-24 00:07:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4968 states. [2021-02-24 00:07:46,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 5118 transitions. [2021-02-24 00:07:46,452 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 5118 transitions. Word has length 839 [2021-02-24 00:07:46,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:07:46,453 INFO L480 AbstractCegarLoop]: Abstraction has 4968 states and 5118 transitions. [2021-02-24 00:07:46,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:07:46,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 5118 transitions. [2021-02-24 00:07:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2021-02-24 00:07:46,462 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:07:46,463 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-24 00:07:46,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-24 00:07:46,463 INFO L428 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:07:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:07:46,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1180277084, now seen corresponding path program 1 times [2021-02-24 00:07:46,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:07:46,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358311538] [2021-02-24 00:07:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:07:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:46,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:46,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:46,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:46,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:46,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:46,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:46,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:46,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:46,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:46,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:46,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:07:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:46,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:46,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:46,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:07:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:46,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:46,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:46,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:46,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:46,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:07:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:46,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:46,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:47,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-02-24 00:07:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:47,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:47,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:47,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:47,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:07:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-02-24 00:07:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:47,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:47,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:47,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:47,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:47,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:47,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2021-02-24 00:07:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:47,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:47,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2021-02-24 00:07:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:47,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:47,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 660 proven. 599 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2021-02-24 00:07:47,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358311538] [2021-02-24 00:07:47,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:07:47,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:07:47,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347569463] [2021-02-24 00:07:47,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:07:47,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:07:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:07:47,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:07:47,837 INFO L87 Difference]: Start difference. First operand 4968 states and 5118 transitions. Second operand 10 states. [2021-02-24 00:07:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:07:51,666 INFO L93 Difference]: Finished difference Result 11102 states and 11440 transitions. [2021-02-24 00:07:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:07:51,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 888 [2021-02-24 00:07:51,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:07:51,682 INFO L225 Difference]: With dead ends: 11102 [2021-02-24 00:07:51,682 INFO L226 Difference]: Without dead ends: 6346 [2021-02-24 00:07:51,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:07:51,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2021-02-24 00:07:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 5944. [2021-02-24 00:07:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5944 states. [2021-02-24 00:07:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 6123 transitions. [2021-02-24 00:07:53,122 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 6123 transitions. Word has length 888 [2021-02-24 00:07:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:07:53,123 INFO L480 AbstractCegarLoop]: Abstraction has 5944 states and 6123 transitions. [2021-02-24 00:07:53,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:07:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 6123 transitions. [2021-02-24 00:07:53,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2021-02-24 00:07:53,131 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:07:53,131 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:07:53,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-24 00:07:53,131 INFO L428 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:07:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:07:53,132 INFO L82 PathProgramCache]: Analyzing trace with hash 244918335, now seen corresponding path program 1 times [2021-02-24 00:07:53,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:07:53,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623013401] [2021-02-24 00:07:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:07:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:53,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:53,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:07:53,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:53,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:07:53,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:07:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:53,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:53,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:07:53,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:07:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:53,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:53,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:53,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:07:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:53,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:53,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:07:53,447 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size [2021-02-24 00:07:53,448 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-02-24 00:07:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-02-24 00:07:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:53,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:07:53,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:07:53,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:07:53,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:07:53,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2021-02-24 00:07:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:53,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2021-02-24 00:07:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:53,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2021-02-24 00:07:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:07:53,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:07:53,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:07:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1921 backedges. 561 proven. 379 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2021-02-24 00:07:55,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623013401] [2021-02-24 00:07:55,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:07:55,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:07:55,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804315976] [2021-02-24 00:07:55,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:07:55,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:07:55,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:07:55,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:07:55,208 INFO L87 Difference]: Start difference. First operand 5944 states and 6123 transitions. Second operand 12 states. [2021-02-24 00:07:55,990 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-02-24 00:07:56,275 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2021-02-24 00:07:56,426 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2021-02-24 00:07:58,001 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-02-24 00:07:58,174 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2021-02-24 00:07:58,629 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-02-24 00:07:59,819 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-02-24 00:08:00,918 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2021-02-24 00:08:01,168 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2021-02-24 00:08:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:08:01,844 INFO L93 Difference]: Finished difference Result 12194 states and 12700 transitions. [2021-02-24 00:08:01,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-24 00:08:01,845 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 899 [2021-02-24 00:08:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:08:01,876 INFO L225 Difference]: With dead ends: 12194 [2021-02-24 00:08:01,876 INFO L226 Difference]: Without dead ends: 6462 [2021-02-24 00:08:01,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 00:08:01,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2021-02-24 00:08:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 5944. [2021-02-24 00:08:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5944 states. [2021-02-24 00:08:03,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 6123 transitions. [2021-02-24 00:08:03,182 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 6123 transitions. Word has length 899 [2021-02-24 00:08:03,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:08:03,183 INFO L480 AbstractCegarLoop]: Abstraction has 5944 states and 6123 transitions. [2021-02-24 00:08:03,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:08:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 6123 transitions. [2021-02-24 00:08:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2021-02-24 00:08:03,190 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:08:03,191 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:08:03,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-24 00:08:03,191 INFO L428 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:08:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:08:03,192 INFO L82 PathProgramCache]: Analyzing trace with hash 398392097, now seen corresponding path program 1 times [2021-02-24 00:08:03,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:08:03,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528810792] [2021-02-24 00:08:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:08:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:03,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:03,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:03,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:08:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:03,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:08:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:03,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:03,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:08:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:03,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:03,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-02-24 00:08:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:03,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-02-24 00:08:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:03,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:03,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:03,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2021-02-24 00:08:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:03,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:03,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:03,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2021-02-24 00:08:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:03,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 872 [2021-02-24 00:08:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:03,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:03,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 905 proven. 197 refuted. 0 times theorem prover too weak. 1399 trivial. 0 not checked. [2021-02-24 00:08:04,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528810792] [2021-02-24 00:08:04,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:08:04,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:08:04,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839588454] [2021-02-24 00:08:04,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:08:04,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:08:04,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:08:04,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:08:04,272 INFO L87 Difference]: Start difference. First operand 5944 states and 6123 transitions. Second operand 8 states. [2021-02-24 00:08:07,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:08:07,020 INFO L93 Difference]: Finished difference Result 11886 states and 12243 transitions. [2021-02-24 00:08:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:08:07,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 995 [2021-02-24 00:08:07,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:08:07,038 INFO L225 Difference]: With dead ends: 11886 [2021-02-24 00:08:07,038 INFO L226 Difference]: Without dead ends: 6154 [2021-02-24 00:08:07,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:08:07,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2021-02-24 00:08:08,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 5944. [2021-02-24 00:08:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5944 states. [2021-02-24 00:08:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 6121 transitions. [2021-02-24 00:08:08,243 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 6121 transitions. Word has length 995 [2021-02-24 00:08:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:08:08,243 INFO L480 AbstractCegarLoop]: Abstraction has 5944 states and 6121 transitions. [2021-02-24 00:08:08,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:08:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 6121 transitions. [2021-02-24 00:08:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2021-02-24 00:08:08,252 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:08:08,252 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-24 00:08:08,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-24 00:08:08,253 INFO L428 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:08:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:08:08,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1798923560, now seen corresponding path program 1 times [2021-02-24 00:08:08,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:08:08,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507689044] [2021-02-24 00:08:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:08:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:08,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:08,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:08,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:08:08,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:08:08,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:08,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:08:08,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:08,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:08:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:08,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:08,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:08:08,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:08:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:08,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:08,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:08,636 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:08:08,636 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:08:08,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:08:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:08,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:08,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:08,672 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:08:08,673 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:08:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-02-24 00:08:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:08,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-02-24 00:08:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:08,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:08,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2021-02-24 00:08:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:08,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:08,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:08,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2021-02-24 00:08:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:08,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:08,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 947 [2021-02-24 00:08:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:08,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:08,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2763 backedges. 958 proven. 283 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2021-02-24 00:08:09,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507689044] [2021-02-24 00:08:09,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:08:09,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:08:09,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441809366] [2021-02-24 00:08:09,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:08:09,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:08:09,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:08:09,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:08:09,706 INFO L87 Difference]: Start difference. First operand 5944 states and 6121 transitions. Second operand 12 states. [2021-02-24 00:08:12,872 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-02-24 00:08:18,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:08:18,948 INFO L93 Difference]: Finished difference Result 12266 states and 12628 transitions. [2021-02-24 00:08:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-24 00:08:18,949 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1070 [2021-02-24 00:08:18,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:08:18,963 INFO L225 Difference]: With dead ends: 12266 [2021-02-24 00:08:18,963 INFO L226 Difference]: Without dead ends: 4726 [2021-02-24 00:08:18,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=369, Invalid=1437, Unknown=0, NotChecked=0, Total=1806 [2021-02-24 00:08:18,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2021-02-24 00:08:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4521. [2021-02-24 00:08:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4521 states. [2021-02-24 00:08:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 4610 transitions. [2021-02-24 00:08:19,947 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 4610 transitions. Word has length 1070 [2021-02-24 00:08:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:08:19,948 INFO L480 AbstractCegarLoop]: Abstraction has 4521 states and 4610 transitions. [2021-02-24 00:08:19,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:08:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 4610 transitions. [2021-02-24 00:08:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2021-02-24 00:08:19,957 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:08:19,958 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-02-24 00:08:19,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-24 00:08:19,958 INFO L428 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:08:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:08:19,958 INFO L82 PathProgramCache]: Analyzing trace with hash 2004241605, now seen corresponding path program 1 times [2021-02-24 00:08:19,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:08:19,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037628959] [2021-02-24 00:08:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:08:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:20,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:20,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:20,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:08:20,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:08:20,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:08:20,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:20,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:08:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:20,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:20,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:08:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:08:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:20,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:20,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:20,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:08:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:20,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:20,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:20,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-02-24 00:08:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:20,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:20,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:20,416 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:08:20,417 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:08:20,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-02-24 00:08:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:20,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:20,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2021-02-24 00:08:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:20,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:20,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2021-02-24 00:08:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:20,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:20,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,542 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:08:20,542 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:08:20,557 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-24 00:08:20,557 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-24 00:08:20,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 821 [2021-02-24 00:08:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:20,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:20,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 957 [2021-02-24 00:08:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:20,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:20,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:08:20,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:20,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:08:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3117 backedges. 797 proven. 322 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2021-02-24 00:08:21,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037628959] [2021-02-24 00:08:21,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:08:21,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-24 00:08:21,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551699218] [2021-02-24 00:08:21,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 00:08:21,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:08:21,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 00:08:21,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:08:21,407 INFO L87 Difference]: Start difference. First operand 4521 states and 4610 transitions. Second operand 15 states. [2021-02-24 00:08:22,817 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2021-02-24 00:08:27,490 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-02-24 00:08:28,195 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-02-24 00:08:30,554 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-02-24 00:08:34,403 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2021-02-24 00:08:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:08:36,932 INFO L93 Difference]: Finished difference Result 7647 states and 7799 transitions. [2021-02-24 00:08:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-02-24 00:08:36,933 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 1080 [2021-02-24 00:08:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:08:36,945 INFO L225 Difference]: With dead ends: 7647 [2021-02-24 00:08:36,945 INFO L226 Difference]: Without dead ends: 3739 [2021-02-24 00:08:36,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=818, Invalid=4012, Unknown=0, NotChecked=0, Total=4830 [2021-02-24 00:08:36,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2021-02-24 00:08:37,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 3545. [2021-02-24 00:08:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2021-02-24 00:08:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 3604 transitions. [2021-02-24 00:08:37,895 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 3604 transitions. Word has length 1080 [2021-02-24 00:08:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:08:37,896 INFO L480 AbstractCegarLoop]: Abstraction has 3545 states and 3604 transitions. [2021-02-24 00:08:37,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 00:08:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 3604 transitions. [2021-02-24 00:08:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1239 [2021-02-24 00:08:37,906 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:08:37,906 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-02-24 00:08:37,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-24 00:08:37,907 INFO L428 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:08:37,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:08:37,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1983854139, now seen corresponding path program 1 times [2021-02-24 00:08:37,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:08:37,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716037898] [2021-02-24 00:08:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:08:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:38,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:38,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:38,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:38,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:08:38,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:08:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:38,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:08:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:38,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:38,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:08:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:38,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-02-24 00:08:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:38,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:38,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-02-24 00:08:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:38,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:38,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:38,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2021-02-24 00:08:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:38,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:38,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:38,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:38,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2021-02-24 00:08:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:38,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:38,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:08:38,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 821 [2021-02-24 00:08:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:38,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:38,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:08:38,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1011 [2021-02-24 00:08:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:38,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:38,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3617 backedges. 1773 proven. 441 refuted. 0 times theorem prover too weak. 1403 trivial. 0 not checked. [2021-02-24 00:08:39,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716037898] [2021-02-24 00:08:39,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:08:39,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:08:39,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274759196] [2021-02-24 00:08:39,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:08:39,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:08:39,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:08:39,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:08:39,604 INFO L87 Difference]: Start difference. First operand 3545 states and 3604 transitions. Second operand 12 states. [2021-02-24 00:08:39,787 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-02-24 00:08:41,210 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-02-24 00:08:41,550 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-02-24 00:08:42,240 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-02-24 00:08:42,423 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-02-24 00:08:43,258 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-02-24 00:08:43,518 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-02-24 00:08:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:08:44,982 INFO L93 Difference]: Finished difference Result 5495 states and 5586 transitions. [2021-02-24 00:08:44,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-24 00:08:44,982 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1238 [2021-02-24 00:08:44,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:08:44,991 INFO L225 Difference]: With dead ends: 5495 [2021-02-24 00:08:44,991 INFO L226 Difference]: Without dead ends: 3938 [2021-02-24 00:08:44,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:08:44,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2021-02-24 00:08:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3738. [2021-02-24 00:08:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3738 states. [2021-02-24 00:08:45,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 3798 transitions. [2021-02-24 00:08:45,778 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 3798 transitions. Word has length 1238 [2021-02-24 00:08:45,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:08:45,779 INFO L480 AbstractCegarLoop]: Abstraction has 3738 states and 3798 transitions. [2021-02-24 00:08:45,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:08:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 3798 transitions. [2021-02-24 00:08:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1514 [2021-02-24 00:08:45,791 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:08:45,792 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-02-24 00:08:45,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-24 00:08:45,792 INFO L428 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:08:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:08:45,793 INFO L82 PathProgramCache]: Analyzing trace with hash 198365461, now seen corresponding path program 1 times [2021-02-24 00:08:45,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:08:45,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75444958] [2021-02-24 00:08:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:08:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:46,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:46,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:46,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:46,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:08:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:08:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:08:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-02-24 00:08:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-02-24 00:08:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2021-02-24 00:08:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2021-02-24 00:08:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 821 [2021-02-24 00:08:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 947 [2021-02-24 00:08:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:46,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:46,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2021-02-24 00:08:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:46,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1286 [2021-02-24 00:08:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:46,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:46,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:08:46,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:46,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:08:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5723 backedges. 2442 proven. 108 refuted. 0 times theorem prover too weak. 3173 trivial. 0 not checked. [2021-02-24 00:08:48,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75444958] [2021-02-24 00:08:48,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:08:48,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:08:48,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070679163] [2021-02-24 00:08:48,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:08:48,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:08:48,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:08:48,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:08:48,089 INFO L87 Difference]: Start difference. First operand 3738 states and 3798 transitions. Second operand 9 states. [2021-02-24 00:08:50,334 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-02-24 00:08:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:08:51,720 INFO L93 Difference]: Finished difference Result 8035 states and 8172 transitions. [2021-02-24 00:08:51,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:08:51,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1513 [2021-02-24 00:08:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:08:51,733 INFO L225 Difference]: With dead ends: 8035 [2021-02-24 00:08:51,733 INFO L226 Difference]: Without dead ends: 3930 [2021-02-24 00:08:51,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:08:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-02-24 00:08:52,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3727. [2021-02-24 00:08:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3727 states. [2021-02-24 00:08:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 3779 transitions. [2021-02-24 00:08:52,508 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 3779 transitions. Word has length 1513 [2021-02-24 00:08:52,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:08:52,509 INFO L480 AbstractCegarLoop]: Abstraction has 3727 states and 3779 transitions. [2021-02-24 00:08:52,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:08:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 3779 transitions. [2021-02-24 00:08:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1826 [2021-02-24 00:08:52,527 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:08:52,527 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2021-02-24 00:08:52,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-24 00:08:52,528 INFO L428 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:08:52,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:08:52,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1166448743, now seen corresponding path program 1 times [2021-02-24 00:08:52,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:08:52,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496365667] [2021-02-24 00:08:52,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:08:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:52,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:52,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:52,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:52,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:08:52,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:52,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:08:52,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:52,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:52,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:52,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:08:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:52,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:52,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:08:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 00:08:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:53,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-02-24 00:08:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-02-24 00:08:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2021-02-24 00:08:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:53,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2021-02-24 00:08:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:53,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 821 [2021-02-24 00:08:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:53,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 947 [2021-02-24 00:08:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:53,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:08:53,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2021-02-24 00:08:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:53,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1286 [2021-02-24 00:08:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:53,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:08:53,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2021-02-24 00:08:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:53,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:08:53,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1598 [2021-02-24 00:08:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:08:53,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:08:53,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:08:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8466 backedges. 3622 proven. 470 refuted. 0 times theorem prover too weak. 4374 trivial. 0 not checked. [2021-02-24 00:08:55,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496365667] [2021-02-24 00:08:55,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:08:55,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:08:55,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282430959] [2021-02-24 00:08:55,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:08:55,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:08:55,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:08:55,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:08:55,337 INFO L87 Difference]: Start difference. First operand 3727 states and 3779 transitions. Second operand 9 states. [2021-02-24 00:08:59,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:08:59,796 INFO L93 Difference]: Finished difference Result 6053 states and 6139 transitions. [2021-02-24 00:08:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:08:59,798 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1825 [2021-02-24 00:08:59,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:08:59,804 INFO L225 Difference]: With dead ends: 6053 [2021-02-24 00:08:59,805 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:08:59,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:08:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:08:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:08:59,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:08:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:08:59,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1825 [2021-02-24 00:08:59,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:08:59,815 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:08:59,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:08:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:08:59,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:08:59,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-24 00:08:59,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:09:00,889 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2021-02-24 00:09:05,157 WARN L202 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 601 DAG size of output: 510 [2021-02-24 00:11:23,719 WARN L202 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 601 DAG size of output: 510 [2021-02-24 00:11:34,832 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:34,972 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:35,120 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:35,282 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:35,417 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:35,549 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:35,711 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:35,853 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:36,016 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:36,124 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 138 [2021-02-24 00:11:36,258 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:36,419 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:36,553 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:36,687 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:36,842 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:36,975 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:37,133 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:37,281 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:11:37,422 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 139 [2021-02-24 00:12:07,122 WARN L202 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 601 DAG size of output: 510 [2021-02-24 00:12:09,746 WARN L202 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 601 DAG size of output: 510 [2021-02-24 00:12:11,770 WARN L202 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 601 DAG size of output: 510 [2021-02-24 00:13:11,055 WARN L202 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 601 DAG size of output: 510 [2021-02-24 00:14:04,385 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 223 [2021-02-24 00:14:04,739 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 194 [2021-02-24 00:14:07,573 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 201 [2021-02-24 00:14:07,856 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 194 [2021-02-24 00:14:09,974 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 225 [2021-02-24 00:14:10,725 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 224 [2021-02-24 00:14:11,883 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 214 [2021-02-24 00:14:13,289 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 223 [2021-02-24 00:14:13,642 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 194 [2021-02-24 00:14:16,503 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 201 [2021-02-24 00:14:16,785 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 194 [2021-02-24 00:14:18,903 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 225 [2021-02-24 00:14:19,620 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 224 [2021-02-24 00:14:20,824 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 214 [2021-02-24 00:14:55,190 WARN L202 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 601 DAG size of output: 510 [2021-02-24 00:14:57,441 WARN L202 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 597 DAG size of output: 509 [2021-02-24 00:15:00,150 WARN L202 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 597 DAG size of output: 509 [2021-02-24 00:15:02,166 WARN L202 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 597 DAG size of output: 509 [2021-02-24 00:16:44,717 WARN L202 SmtUtils]: Spent 5.53 s on a formula simplification. DAG size of input: 474 DAG size of output: 166 [2021-02-24 00:16:46,544 WARN L202 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 245 DAG size of output: 133 [2021-02-24 00:16:48,380 WARN L202 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 261 DAG size of output: 139 [2021-02-24 00:16:50,244 WARN L202 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 294 DAG size of output: 134 [2021-02-24 00:16:55,065 WARN L202 SmtUtils]: Spent 4.81 s on a formula simplification. DAG size of input: 490 DAG size of output: 121 [2021-02-24 00:16:56,748 WARN L202 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 274 DAG size of output: 133 [2021-02-24 00:16:58,519 WARN L202 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 253 DAG size of output: 127 [2021-02-24 00:17:00,501 WARN L202 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 293 DAG size of output: 134 [2021-02-24 00:17:02,762 WARN L202 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 257 DAG size of output: 129 [2021-02-24 00:17:04,459 WARN L202 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 250 DAG size of output: 129 [2021-02-24 00:17:06,716 WARN L202 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 260 DAG size of output: 129 [2021-02-24 00:17:12,282 WARN L202 SmtUtils]: Spent 5.54 s on a formula simplification. DAG size of input: 474 DAG size of output: 166 [2021-02-24 00:17:13,978 WARN L202 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 250 DAG size of output: 129 [2021-02-24 00:17:16,393 WARN L202 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 285 DAG size of output: 132 [2021-02-24 00:17:18,082 WARN L202 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 269 DAG size of output: 132 [2021-02-24 00:17:19,889 WARN L202 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 263 DAG size of output: 135 [2021-02-24 00:17:21,604 WARN L202 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 251 DAG size of output: 132 [2021-02-24 00:17:27,083 WARN L202 SmtUtils]: Spent 5.46 s on a formula simplification. DAG size of input: 460 DAG size of output: 157 [2021-02-24 00:17:29,312 WARN L202 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 261 DAG size of output: 134 [2021-02-24 00:17:31,518 WARN L202 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 288 DAG size of output: 128 [2021-02-24 00:17:33,878 WARN L202 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 260 DAG size of output: 138 [2021-02-24 00:17:36,431 WARN L202 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 295 DAG size of output: 132 [2021-02-24 00:17:39,125 WARN L202 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 261 DAG size of output: 139 [2021-02-24 00:17:41,303 WARN L202 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 250 DAG size of output: 129 [2021-02-24 00:17:43,174 WARN L202 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 290 DAG size of output: 137 [2021-02-24 00:17:48,797 WARN L202 SmtUtils]: Spent 5.60 s on a formula simplification. DAG size of input: 474 DAG size of output: 166 [2021-02-24 00:17:50,538 WARN L202 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 258 DAG size of output: 129 [2021-02-24 00:17:52,907 WARN L202 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 260 DAG size of output: 138 [2021-02-24 00:17:58,725 WARN L202 SmtUtils]: Spent 5.80 s on a formula simplification. DAG size of input: 489 DAG size of output: 163 [2021-02-24 00:18:01,342 WARN L202 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 275 DAG size of output: 142 [2021-02-24 00:18:03,068 WARN L202 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 250 DAG size of output: 129 [2021-02-24 00:18:04,797 WARN L202 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 250 DAG size of output: 130 [2021-02-24 00:18:07,348 WARN L202 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 293 DAG size of output: 150 [2021-02-24 00:18:09,338 WARN L202 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 306 DAG size of output: 129 [2021-02-24 00:18:11,337 WARN L202 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 305 DAG size of output: 142 [2021-02-24 00:18:17,163 WARN L202 SmtUtils]: Spent 5.81 s on a formula simplification. DAG size of input: 489 DAG size of output: 163 [2021-02-24 00:18:22,982 WARN L202 SmtUtils]: Spent 5.80 s on a formula simplification. DAG size of input: 489 DAG size of output: 163 [2021-02-24 00:18:24,833 WARN L202 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 260 DAG size of output: 127 [2021-02-24 00:18:30,530 WARN L202 SmtUtils]: Spent 5.68 s on a formula simplification. DAG size of input: 474 DAG size of output: 166 [2021-02-24 00:18:36,234 WARN L202 SmtUtils]: Spent 5.69 s on a formula simplification. DAG size of input: 474 DAG size of output: 166 [2021-02-24 00:18:38,583 WARN L202 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 266 DAG size of output: 128 [2021-02-24 00:18:40,345 WARN L202 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 258 DAG size of output: 129 [2021-02-24 00:18:42,756 WARN L202 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 278 DAG size of output: 136 [2021-02-24 00:18:44,782 WARN L202 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 305 DAG size of output: 142 [2021-02-24 00:18:46,802 WARN L202 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 305 DAG size of output: 142 [2021-02-24 00:18:52,510 WARN L202 SmtUtils]: Spent 5.69 s on a formula simplification. DAG size of input: 474 DAG size of output: 166 [2021-02-24 00:18:54,680 WARN L202 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 248 DAG size of output: 126