/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/loops-crafted-1/sumt8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:30:47,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:30:47,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:30:47,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:30:47,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:30:47,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:30:47,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:30:47,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:30:47,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:30:47,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:30:47,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:30:47,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:30:47,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:30:47,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:30:47,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:30:47,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:30:47,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:30:47,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:30:47,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:30:47,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:30:47,352 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 00:30:47,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:30:47,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:30:47,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:30:47,386 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:30:47,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:30:47,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:30:47,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:30:47,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:30:47,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:30:47,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:30:47,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:30:47,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:30:47,389 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:30:47,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:30:47,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:30:47,389 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:30:47,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:30:47,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:30:47,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:30:47,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:30:47,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:30:47,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:30:47,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:30:47,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:30:47,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:30:47,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:30:47,799 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:30:47,799 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:30:47,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt8.c [2021-02-24 00:30:47,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/500d26005/98360abb991e445ca15a1b7becd0a786/FLAGdaceb6044 [2021-02-24 00:30:48,529 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:30:48,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt8.c [2021-02-24 00:30:48,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/500d26005/98360abb991e445ca15a1b7becd0a786/FLAGdaceb6044 [2021-02-24 00:30:48,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/500d26005/98360abb991e445ca15a1b7becd0a786 [2021-02-24 00:30:48,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:30:48,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:30:48,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:30:48,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:30:48,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:30:48,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:30:48" (1/1) ... [2021-02-24 00:30:48,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63442433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:48, skipping insertion in model container [2021-02-24 00:30:48,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:30:48" (1/1) ... [2021-02-24 00:30:48,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:30:48,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:30:49,111 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt8.c[403,416] [2021-02-24 00:30:49,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:30:49,148 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:30:49,165 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt8.c[403,416] [2021-02-24 00:30:49,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:30:49,196 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:30:49,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:49 WrapperNode [2021-02-24 00:30:49,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:30:49,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:30:49,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:30:49,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:30:49,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:49" (1/1) ... [2021-02-24 00:30:49,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:49" (1/1) ... [2021-02-24 00:30:49,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:49" (1/1) ... [2021-02-24 00:30:49,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:49" (1/1) ... [2021-02-24 00:30:49,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:49" (1/1) ... [2021-02-24 00:30:49,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:49" (1/1) ... [2021-02-24 00:30:49,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:49" (1/1) ... [2021-02-24 00:30:49,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:30:49,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:30:49,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:30:49,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:30:49,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:49" (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 00:30:49,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:30:49,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:30:49,389 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:30:49,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:30:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:30:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:30:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:30:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:30:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:30:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:30:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:30:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:30:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:30:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:30:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:30:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:30:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:30:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:30:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:30:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:30:50,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:30:50,021 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:30:50,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:30:50 BoogieIcfgContainer [2021-02-24 00:30:50,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:30:50,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:30:50,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:30:50,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:30:50,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:30:48" (1/3) ... [2021-02-24 00:30:50,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217a796d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:30:50, skipping insertion in model container [2021-02-24 00:30:50,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:49" (2/3) ... [2021-02-24 00:30:50,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217a796d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:30:50, skipping insertion in model container [2021-02-24 00:30:50,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:30:50" (3/3) ... [2021-02-24 00:30:50,039 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt8.c [2021-02-24 00:30:50,051 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:30:50,056 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:30:50,079 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:30:50,119 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:30:50,119 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:30:50,119 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:30:50,120 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:30:50,120 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:30:50,120 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:30:50,120 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:30:50,120 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:30:50,150 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2021-02-24 00:30:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 00:30:50,165 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:50,166 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] [2021-02-24 00:30:50,167 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:50,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:50,176 INFO L82 PathProgramCache]: Analyzing trace with hash 948591750, now seen corresponding path program 1 times [2021-02-24 00:30:50,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:50,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245117276] [2021-02-24 00:30:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:50,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:50,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:50,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:50,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:30:50,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:50,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:30:50,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:30:50,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:30:50,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:30:50,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:30:51,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:51,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:30:51,086 WARN L141 QuantifierPusher]: treesize reduction 34, result has 83.1 percent of original size [2021-02-24 00:30:51,093 WARN L147 QuantifierPusher]: treesize reduction 34, result has 83.1 percent of original size 167 [2021-02-24 00:30:51,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:51,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:51,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:51,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:51,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:51,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:51,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:51,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:51,305 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 00:30:51,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245117276] [2021-02-24 00:30:51,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:30:51,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-24 00:30:51,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262501461] [2021-02-24 00:30:51,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 00:30:51,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:51,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 00:30:51,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:30:51,334 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 16 states. [2021-02-24 00:30:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:52,764 INFO L93 Difference]: Finished difference Result 181 states and 248 transitions. [2021-02-24 00:30:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-24 00:30:52,766 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2021-02-24 00:30:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:52,784 INFO L225 Difference]: With dead ends: 181 [2021-02-24 00:30:52,785 INFO L226 Difference]: Without dead ends: 130 [2021-02-24 00:30:52,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2021-02-24 00:30:52,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-02-24 00:30:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 60. [2021-02-24 00:30:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 00:30:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-02-24 00:30:52,913 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 35 [2021-02-24 00:30:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:52,916 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-02-24 00:30:52,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 00:30:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-02-24 00:30:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-24 00:30:52,918 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:52,924 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:52,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:30:52,925 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:52,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1775592559, now seen corresponding path program 1 times [2021-02-24 00:30:52,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:52,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431496486] [2021-02-24 00:30:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:53,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:53,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:53,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:53,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:53,059 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:30:53,060 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:30:53,081 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:53,082 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:53,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:53,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:53,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:53,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:30:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:53,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:53,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:53,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431496486] [2021-02-24 00:30:53,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:53,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:53,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056367824] [2021-02-24 00:30:53,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:53,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:53,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:53,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:53,143 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 5 states. [2021-02-24 00:30:53,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:53,500 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2021-02-24 00:30:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:53,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-02-24 00:30:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:53,503 INFO L225 Difference]: With dead ends: 100 [2021-02-24 00:30:53,503 INFO L226 Difference]: Without dead ends: 76 [2021-02-24 00:30:53,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:53,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-24 00:30:53,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 62. [2021-02-24 00:30:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-24 00:30:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2021-02-24 00:30:53,533 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 44 [2021-02-24 00:30:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:53,533 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2021-02-24 00:30:53,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2021-02-24 00:30:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 00:30:53,535 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:53,535 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:53,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:30:53,536 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:53,537 INFO L82 PathProgramCache]: Analyzing trace with hash -746409004, now seen corresponding path program 1 times [2021-02-24 00:30:53,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:53,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866768260] [2021-02-24 00:30:53,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:53,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:53,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:53,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:53,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:53,666 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:30:53,668 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 91 [2021-02-24 00:30:53,714 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:30:53,717 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:30:53,731 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:30:53,733 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:30:53,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:53,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:53,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:53,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:53,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:53,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:30:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:53,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:53,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:53,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866768260] [2021-02-24 00:30:53,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:53,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:53,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978624212] [2021-02-24 00:30:53,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:53,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:53,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:53,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:53,791 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 5 states. [2021-02-24 00:30:54,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:54,183 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2021-02-24 00:30:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:54,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2021-02-24 00:30:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:54,185 INFO L225 Difference]: With dead ends: 99 [2021-02-24 00:30:54,185 INFO L226 Difference]: Without dead ends: 75 [2021-02-24 00:30:54,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:54,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-24 00:30:54,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-02-24 00:30:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-24 00:30:54,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2021-02-24 00:30:54,213 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 45 [2021-02-24 00:30:54,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:54,214 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2021-02-24 00:30:54,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2021-02-24 00:30:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-24 00:30:54,216 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:54,216 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:54,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:30:54,216 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:54,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:54,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1447271223, now seen corresponding path program 1 times [2021-02-24 00:30:54,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:54,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35588318] [2021-02-24 00:30:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:54,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:54,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:54,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-02-24 00:30:54,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:54,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:54,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:54,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:30:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:54,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:54,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35588318] [2021-02-24 00:30:54,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:54,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:54,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215847123] [2021-02-24 00:30:54,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:54,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:54,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:54,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:54,427 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 5 states. [2021-02-24 00:30:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:54,752 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2021-02-24 00:30:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:54,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2021-02-24 00:30:54,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:54,754 INFO L225 Difference]: With dead ends: 89 [2021-02-24 00:30:54,754 INFO L226 Difference]: Without dead ends: 65 [2021-02-24 00:30:54,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-24 00:30:54,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-02-24 00:30:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-24 00:30:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2021-02-24 00:30:54,784 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 46 [2021-02-24 00:30:54,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:54,784 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2021-02-24 00:30:54,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:54,784 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2021-02-24 00:30:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 00:30:54,786 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:54,786 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:54,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:30:54,787 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:54,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:54,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1527388626, now seen corresponding path program 1 times [2021-02-24 00:30:54,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:54,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67930532] [2021-02-24 00:30:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:54,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:54,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:54,855 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:30:54,856 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 87 [2021-02-24 00:30:54,889 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:30:54,890 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 95 [2021-02-24 00:30:54,902 WARN L141 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size [2021-02-24 00:30:54,902 WARN L147 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size 1 [2021-02-24 00:30:54,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:54,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:54,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:30:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:54,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:54,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:54,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67930532] [2021-02-24 00:30:54,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:54,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:54,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268925093] [2021-02-24 00:30:54,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:54,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:54,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:54,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:54,954 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 5 states. [2021-02-24 00:30:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:55,292 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2021-02-24 00:30:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:55,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2021-02-24 00:30:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:55,294 INFO L225 Difference]: With dead ends: 97 [2021-02-24 00:30:55,295 INFO L226 Difference]: Without dead ends: 73 [2021-02-24 00:30:55,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-24 00:30:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2021-02-24 00:30:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-24 00:30:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2021-02-24 00:30:55,325 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 47 [2021-02-24 00:30:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:55,326 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2021-02-24 00:30:55,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2021-02-24 00:30:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:30:55,327 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:55,327 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:55,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:30:55,328 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:55,328 INFO L82 PathProgramCache]: Analyzing trace with hash 455714083, now seen corresponding path program 1 times [2021-02-24 00:30:55,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:55,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267427121] [2021-02-24 00:30:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:55,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:55,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:55,373 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:30:55,374 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:30:55,391 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:55,391 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:55,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:55,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:55,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:55,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:30:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:55,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:55,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267427121] [2021-02-24 00:30:55,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:55,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:55,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861546599] [2021-02-24 00:30:55,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:55,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:55,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:55,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:55,437 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 5 states. [2021-02-24 00:30:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:55,712 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2021-02-24 00:30:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:55,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2021-02-24 00:30:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:55,717 INFO L225 Difference]: With dead ends: 96 [2021-02-24 00:30:55,718 INFO L226 Difference]: Without dead ends: 72 [2021-02-24 00:30:55,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:55,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-24 00:30:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2021-02-24 00:30:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-24 00:30:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-02-24 00:30:55,759 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 48 [2021-02-24 00:30:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:55,762 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-02-24 00:30:55,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-02-24 00:30:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-24 00:30:55,769 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:55,769 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:55,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:30:55,770 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:55,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:55,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1974130824, now seen corresponding path program 1 times [2021-02-24 00:30:55,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:55,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968411717] [2021-02-24 00:30:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:55,916 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:55,919 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:55,941 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:30:55,944 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:30:55,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:55,983 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:30:55,984 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 110 [2021-02-24 00:30:56,044 WARN L141 QuantifierPusher]: treesize reduction 6, result has 94.4 percent of original size [2021-02-24 00:30:56,047 WARN L147 QuantifierPusher]: treesize reduction 6, result has 94.4 percent of original size 101 [2021-02-24 00:30:56,068 WARN L141 QuantifierPusher]: treesize reduction 6, result has 93.9 percent of original size [2021-02-24 00:30:56,069 WARN L147 QuantifierPusher]: treesize reduction 6, result has 93.9 percent of original size 92 [2021-02-24 00:30:56,131 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:56,132 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:56,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:56,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:56,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:56,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:56,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:30:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:56,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:56,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968411717] [2021-02-24 00:30:56,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:56,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:30:56,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484768997] [2021-02-24 00:30:56,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:30:56,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:56,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:30:56,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:30:56,249 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 9 states. [2021-02-24 00:30:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:56,993 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2021-02-24 00:30:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:30:56,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2021-02-24 00:30:56,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:56,998 INFO L225 Difference]: With dead ends: 95 [2021-02-24 00:30:56,998 INFO L226 Difference]: Without dead ends: 71 [2021-02-24 00:30:56,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:30:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-02-24 00:30:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2021-02-24 00:30:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-24 00:30:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2021-02-24 00:30:57,042 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 49 [2021-02-24 00:30:57,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:57,043 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2021-02-24 00:30:57,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:30:57,043 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2021-02-24 00:30:57,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-24 00:30:57,049 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:57,049 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:57,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:30:57,049 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:57,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1972184445, now seen corresponding path program 1 times [2021-02-24 00:30:57,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:57,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849040623] [2021-02-24 00:30:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:57,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:57,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:57,126 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:30:57,127 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:30:57,147 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:57,148 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:57,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:57,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:57,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:30:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:57,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:57,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849040623] [2021-02-24 00:30:57,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:57,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:57,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782120751] [2021-02-24 00:30:57,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:57,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:57,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:57,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:57,243 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 5 states. [2021-02-24 00:30:57,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:57,500 INFO L93 Difference]: Finished difference Result 94 states and 109 transitions. [2021-02-24 00:30:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:57,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2021-02-24 00:30:57,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:57,502 INFO L225 Difference]: With dead ends: 94 [2021-02-24 00:30:57,502 INFO L226 Difference]: Without dead ends: 70 [2021-02-24 00:30:57,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-24 00:30:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2021-02-24 00:30:57,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-24 00:30:57,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2021-02-24 00:30:57,533 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 50 [2021-02-24 00:30:57,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:57,533 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2021-02-24 00:30:57,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:57,533 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2021-02-24 00:30:57,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-24 00:30:57,534 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:57,534 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:57,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:30:57,534 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:57,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:57,535 INFO L82 PathProgramCache]: Analyzing trace with hash 425615645, now seen corresponding path program 1 times [2021-02-24 00:30:57,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:57,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273609925] [2021-02-24 00:30:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:57,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:57,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:57,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:57,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:30:57,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:57,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:30:57,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:30:57,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:30:57,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:30:57,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:30:57,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:30:57,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:30:57,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:30:57,827 WARN L141 QuantifierPusher]: treesize reduction 34, result has 83.5 percent of original size [2021-02-24 00:30:57,830 WARN L147 QuantifierPusher]: treesize reduction 34, result has 83.5 percent of original size 172 [2021-02-24 00:30:57,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:57,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:57,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:57,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:58,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:30:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:58,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:58,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273609925] [2021-02-24 00:30:58,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:58,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-24 00:30:58,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952629173] [2021-02-24 00:30:58,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 00:30:58,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:58,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 00:30:58,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:30:58,047 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 18 states. [2021-02-24 00:30:59,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:59,338 INFO L93 Difference]: Finished difference Result 111 states and 133 transitions. [2021-02-24 00:30:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:30:59,338 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 50 [2021-02-24 00:30:59,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:59,340 INFO L225 Difference]: With dead ends: 111 [2021-02-24 00:30:59,340 INFO L226 Difference]: Without dead ends: 109 [2021-02-24 00:30:59,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=863, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 00:30:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-24 00:30:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2021-02-24 00:30:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-24 00:30:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-02-24 00:30:59,372 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 50 [2021-02-24 00:30:59,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:59,373 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-02-24 00:30:59,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 00:30:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-02-24 00:30:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-24 00:30:59,373 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:59,374 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-02-24 00:30:59,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:30:59,374 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:59,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:59,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1956092344, now seen corresponding path program 2 times [2021-02-24 00:30:59,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:59,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113865003] [2021-02-24 00:30:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:59,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:59,432 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:30:59,433 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:30:59,451 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:59,451 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:59,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:30:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:30:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:30:59,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113865003] [2021-02-24 00:30:59,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:59,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:30:59,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698012922] [2021-02-24 00:30:59,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:30:59,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:59,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:30:59,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:30:59,501 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 6 states. [2021-02-24 00:30:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:59,938 INFO L93 Difference]: Finished difference Result 115 states and 136 transitions. [2021-02-24 00:30:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:30:59,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2021-02-24 00:30:59,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:59,940 INFO L225 Difference]: With dead ends: 115 [2021-02-24 00:30:59,940 INFO L226 Difference]: Without dead ends: 91 [2021-02-24 00:30:59,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:30:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-24 00:30:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 77. [2021-02-24 00:30:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-24 00:30:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2021-02-24 00:30:59,977 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 59 [2021-02-24 00:30:59,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:59,978 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2021-02-24 00:30:59,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:30:59,978 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2021-02-24 00:30:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-24 00:30:59,980 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:59,980 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-02-24 00:30:59,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:30:59,980 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:59,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:59,981 INFO L82 PathProgramCache]: Analyzing trace with hash 554117035, now seen corresponding path program 1 times [2021-02-24 00:30:59,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:59,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551708535] [2021-02-24 00:30:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:00,037 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:00,038 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:00,054 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:00,055 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:00,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:00,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:00,099 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:00,100 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 101 [2021-02-24 00:31:00,166 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:00,167 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 107 [2021-02-24 00:31:00,197 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:00,198 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:00,221 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:00,222 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:00,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:00,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:00,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:00,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:00,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:00,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:00,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:00,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:00,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551708535] [2021-02-24 00:31:00,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:00,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:31:00,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642642409] [2021-02-24 00:31:00,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:31:00,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:00,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:31:00,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:31:00,319 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 9 states. [2021-02-24 00:31:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:01,025 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2021-02-24 00:31:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:31:01,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2021-02-24 00:31:01,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:01,026 INFO L225 Difference]: With dead ends: 114 [2021-02-24 00:31:01,027 INFO L226 Difference]: Without dead ends: 90 [2021-02-24 00:31:01,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-02-24 00:31:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-02-24 00:31:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2021-02-24 00:31:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 00:31:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2021-02-24 00:31:01,060 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 60 [2021-02-24 00:31:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:01,060 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2021-02-24 00:31:01,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:31:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2021-02-24 00:31:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-02-24 00:31:01,061 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:01,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-02-24 00:31:01,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 00:31:01,061 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:01,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:01,062 INFO L82 PathProgramCache]: Analyzing trace with hash 214330322, now seen corresponding path program 1 times [2021-02-24 00:31:01,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:01,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868779159] [2021-02-24 00:31:01,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:01,132 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:01,133 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:01,152 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:01,153 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:01,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:01,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:01,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:01,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:31:01,206 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:01,207 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 109 [2021-02-24 00:31:01,289 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:31:01,290 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 115 [2021-02-24 00:31:01,332 WARN L141 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size [2021-02-24 00:31:01,333 WARN L147 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size 99 [2021-02-24 00:31:01,398 WARN L141 QuantifierPusher]: treesize reduction 89, result has 49.1 percent of original size [2021-02-24 00:31:01,399 WARN L147 QuantifierPusher]: treesize reduction 89, result has 49.1 percent of original size 86 [2021-02-24 00:31:01,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:01,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:01,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:01,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:01,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:01,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:01,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:01,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:01,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:01,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:01,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:01,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868779159] [2021-02-24 00:31:01,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:01,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:31:01,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418751849] [2021-02-24 00:31:01,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:31:01,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:01,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:31:01,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:31:01,512 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 10 states. [2021-02-24 00:31:02,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:02,348 INFO L93 Difference]: Finished difference Result 113 states and 132 transitions. [2021-02-24 00:31:02,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:31:02,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2021-02-24 00:31:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:02,351 INFO L225 Difference]: With dead ends: 113 [2021-02-24 00:31:02,351 INFO L226 Difference]: Without dead ends: 89 [2021-02-24 00:31:02,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:31:02,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-24 00:31:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2021-02-24 00:31:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-24 00:31:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2021-02-24 00:31:02,386 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 61 [2021-02-24 00:31:02,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:02,386 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2021-02-24 00:31:02,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:31:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2021-02-24 00:31:02,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-24 00:31:02,387 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:02,387 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-02-24 00:31:02,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 00:31:02,387 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:02,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:02,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1557348283, now seen corresponding path program 1 times [2021-02-24 00:31:02,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:02,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815777088] [2021-02-24 00:31:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:02,451 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:02,452 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:02,470 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:02,471 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:02,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:02,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:31:02,525 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:02,526 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 109 [2021-02-24 00:31:02,600 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:31:02,601 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 115 [2021-02-24 00:31:02,632 WARN L141 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size [2021-02-24 00:31:02,633 WARN L147 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size 99 [2021-02-24 00:31:02,690 WARN L141 QuantifierPusher]: treesize reduction 89, result has 49.1 percent of original size [2021-02-24 00:31:02,690 WARN L147 QuantifierPusher]: treesize reduction 89, result has 49.1 percent of original size 86 [2021-02-24 00:31:02,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:02,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:02,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:02,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:02,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:02,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:02,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:02,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:02,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815777088] [2021-02-24 00:31:02,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:02,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:31:02,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528074741] [2021-02-24 00:31:02,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:31:02,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:02,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:31:02,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:31:02,800 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 10 states. [2021-02-24 00:31:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:03,677 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2021-02-24 00:31:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:31:03,678 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2021-02-24 00:31:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:03,679 INFO L225 Difference]: With dead ends: 112 [2021-02-24 00:31:03,679 INFO L226 Difference]: Without dead ends: 88 [2021-02-24 00:31:03,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:31:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-02-24 00:31:03,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2021-02-24 00:31:03,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-24 00:31:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2021-02-24 00:31:03,717 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 62 [2021-02-24 00:31:03,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:03,718 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2021-02-24 00:31:03,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:31:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2021-02-24 00:31:03,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-24 00:31:03,719 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:03,719 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-02-24 00:31:03,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 00:31:03,719 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:03,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:03,720 INFO L82 PathProgramCache]: Analyzing trace with hash -473035284, now seen corresponding path program 1 times [2021-02-24 00:31:03,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:03,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864440] [2021-02-24 00:31:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:03,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:03,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:03,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:03,771 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:03,772 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:03,790 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:03,791 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:03,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:03,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:03,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:03,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:03,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:03,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:03,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864440] [2021-02-24 00:31:03,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:03,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:31:03,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190563199] [2021-02-24 00:31:03,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:31:03,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:03,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:31:03,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:31:03,841 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 6 states. [2021-02-24 00:31:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:04,222 INFO L93 Difference]: Finished difference Result 111 states and 128 transitions. [2021-02-24 00:31:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:31:04,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2021-02-24 00:31:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:04,226 INFO L225 Difference]: With dead ends: 111 [2021-02-24 00:31:04,227 INFO L226 Difference]: Without dead ends: 87 [2021-02-24 00:31:04,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:31:04,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-24 00:31:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2021-02-24 00:31:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-24 00:31:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2021-02-24 00:31:04,262 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 63 [2021-02-24 00:31:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:04,263 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2021-02-24 00:31:04,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:31:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2021-02-24 00:31:04,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-24 00:31:04,263 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:04,264 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:31:04,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-24 00:31:04,264 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:04,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:04,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1047295777, now seen corresponding path program 1 times [2021-02-24 00:31:04,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:04,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58499876] [2021-02-24 00:31:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:04,364 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:04,365 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:04,382 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:04,383 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:04,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:04,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:04,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:04,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:04,437 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.2 percent of original size [2021-02-24 00:31:04,439 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.2 percent of original size 118 [2021-02-24 00:31:04,484 WARN L141 QuantifierPusher]: treesize reduction 7, result has 93.9 percent of original size [2021-02-24 00:31:04,485 WARN L147 QuantifierPusher]: treesize reduction 7, result has 93.9 percent of original size 108 [2021-02-24 00:31:04,514 WARN L141 QuantifierPusher]: treesize reduction 7, result has 92.9 percent of original size [2021-02-24 00:31:04,515 WARN L147 QuantifierPusher]: treesize reduction 7, result has 92.9 percent of original size 92 [2021-02-24 00:31:04,551 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:04,552 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:04,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:04,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:04,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:04,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:04,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:04,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:04,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:04,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:04,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:04,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:04,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:04,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:04,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:04,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58499876] [2021-02-24 00:31:04,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:04,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:31:04,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388153712] [2021-02-24 00:31:04,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:31:04,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:04,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:31:04,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:31:04,657 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 10 states. [2021-02-24 00:31:05,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:05,555 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2021-02-24 00:31:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:31:05,556 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2021-02-24 00:31:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:05,557 INFO L225 Difference]: With dead ends: 110 [2021-02-24 00:31:05,557 INFO L226 Difference]: Without dead ends: 86 [2021-02-24 00:31:05,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:31:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-24 00:31:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2021-02-24 00:31:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-24 00:31:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2021-02-24 00:31:05,598 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 64 [2021-02-24 00:31:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:05,598 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2021-02-24 00:31:05,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:31:05,598 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2021-02-24 00:31:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-24 00:31:05,599 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:05,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-02-24 00:31:05,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-24 00:31:05,599 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:05,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1497726970, now seen corresponding path program 1 times [2021-02-24 00:31:05,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:05,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113419529] [2021-02-24 00:31:05,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:05,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:05,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:05,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:05,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:31:05,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:05,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:31:05,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:05,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:05,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:05,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:05,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:05,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:05,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:31:05,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:05,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:31:05,990 WARN L141 QuantifierPusher]: treesize reduction 34, result has 83.6 percent of original size [2021-02-24 00:31:05,992 WARN L147 QuantifierPusher]: treesize reduction 34, result has 83.6 percent of original size 173 [2021-02-24 00:31:06,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:06,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:06,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:06,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:06,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:06,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:06,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:06,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:06,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:06,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113419529] [2021-02-24 00:31:06,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:06,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-02-24 00:31:06,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371746805] [2021-02-24 00:31:06,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-24 00:31:06,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:06,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-24 00:31:06,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:31:06,230 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand 20 states. [2021-02-24 00:31:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:07,936 INFO L93 Difference]: Finished difference Result 142 states and 172 transitions. [2021-02-24 00:31:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-24 00:31:07,937 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2021-02-24 00:31:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:07,939 INFO L225 Difference]: With dead ends: 142 [2021-02-24 00:31:07,939 INFO L226 Difference]: Without dead ends: 140 [2021-02-24 00:31:07,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=292, Invalid=1114, Unknown=0, NotChecked=0, Total=1406 [2021-02-24 00:31:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-02-24 00:31:07,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2021-02-24 00:31:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-02-24 00:31:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2021-02-24 00:31:07,989 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 65 [2021-02-24 00:31:07,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:07,990 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2021-02-24 00:31:07,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-24 00:31:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2021-02-24 00:31:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-24 00:31:07,992 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:07,992 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2021-02-24 00:31:07,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-24 00:31:07,992 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:07,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:07,993 INFO L82 PathProgramCache]: Analyzing trace with hash 550842607, now seen corresponding path program 2 times [2021-02-24 00:31:07,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:07,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267518596] [2021-02-24 00:31:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:08,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:08,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:08,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:08,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:08,052 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:08,053 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:08,073 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:08,074 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:08,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:08,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:08,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:08,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:08,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:08,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:08,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:08,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:08,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:08,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267518596] [2021-02-24 00:31:08,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:08,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:31:08,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150504909] [2021-02-24 00:31:08,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:31:08,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:08,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:31:08,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:08,140 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 7 states. [2021-02-24 00:31:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:08,637 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2021-02-24 00:31:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:31:08,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2021-02-24 00:31:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:08,639 INFO L225 Difference]: With dead ends: 149 [2021-02-24 00:31:08,639 INFO L226 Difference]: Without dead ends: 106 [2021-02-24 00:31:08,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:08,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-24 00:31:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 92. [2021-02-24 00:31:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-02-24 00:31:08,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-02-24 00:31:08,680 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 74 [2021-02-24 00:31:08,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:08,680 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-02-24 00:31:08,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:31:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-02-24 00:31:08,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-24 00:31:08,681 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:08,682 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-02-24 00:31:08,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-24 00:31:08,682 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:08,683 INFO L82 PathProgramCache]: Analyzing trace with hash -58951852, now seen corresponding path program 1 times [2021-02-24 00:31:08,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:08,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380674156] [2021-02-24 00:31:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:08,744 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:08,745 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:08,761 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:08,762 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:08,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:08,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:08,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:08,817 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:08,818 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 101 [2021-02-24 00:31:08,884 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:08,885 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 107 [2021-02-24 00:31:08,912 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:08,913 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:08,935 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:08,936 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:08,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:08,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:08,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:08,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:08,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:09,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:09,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:09,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:09,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:09,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:09,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380674156] [2021-02-24 00:31:09,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:09,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:31:09,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730662088] [2021-02-24 00:31:09,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:31:09,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:09,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:31:09,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:31:09,068 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 10 states. [2021-02-24 00:31:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:10,008 INFO L93 Difference]: Finished difference Result 129 states and 149 transitions. [2021-02-24 00:31:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:31:10,009 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2021-02-24 00:31:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:10,010 INFO L225 Difference]: With dead ends: 129 [2021-02-24 00:31:10,010 INFO L226 Difference]: Without dead ends: 105 [2021-02-24 00:31:10,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:31:10,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-02-24 00:31:10,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2021-02-24 00:31:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-02-24 00:31:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2021-02-24 00:31:10,059 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 75 [2021-02-24 00:31:10,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:10,059 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2021-02-24 00:31:10,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:31:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2021-02-24 00:31:10,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-02-24 00:31:10,060 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:10,061 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-02-24 00:31:10,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-24 00:31:10,061 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:10,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:10,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1610935991, now seen corresponding path program 1 times [2021-02-24 00:31:10,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:10,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977355172] [2021-02-24 00:31:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:10,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:10,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 00:31:10,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 00:31:10,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-02-24 00:31:10,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:10,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:10,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:10,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:10,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:10,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977355172] [2021-02-24 00:31:10,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:10,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:31:10,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580638822] [2021-02-24 00:31:10,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:31:10,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:10,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:31:10,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:10,282 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 7 states. [2021-02-24 00:31:13,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:13,108 INFO L93 Difference]: Finished difference Result 144 states and 174 transitions. [2021-02-24 00:31:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:31:13,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2021-02-24 00:31:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:13,110 INFO L225 Difference]: With dead ends: 144 [2021-02-24 00:31:13,110 INFO L226 Difference]: Without dead ends: 120 [2021-02-24 00:31:13,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:31:13,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-02-24 00:31:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-02-24 00:31:13,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-02-24 00:31:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2021-02-24 00:31:13,163 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 76 [2021-02-24 00:31:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:13,164 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2021-02-24 00:31:13,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:31:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2021-02-24 00:31:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-24 00:31:13,165 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:13,165 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-02-24 00:31:13,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-24 00:31:13,165 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:13,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:13,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1988938158, now seen corresponding path program 1 times [2021-02-24 00:31:13,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:13,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238924803] [2021-02-24 00:31:13,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,238 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:13,239 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:13,267 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:13,268 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:13,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:13,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:31:13,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:31:13,377 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:13,378 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 109 [2021-02-24 00:31:13,528 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:31:13,530 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 115 [2021-02-24 00:31:13,595 WARN L141 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size [2021-02-24 00:31:13,596 WARN L147 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size 99 [2021-02-24 00:31:13,718 WARN L141 QuantifierPusher]: treesize reduction 89, result has 49.1 percent of original size [2021-02-24 00:31:13,718 WARN L147 QuantifierPusher]: treesize reduction 89, result has 49.1 percent of original size 86 [2021-02-24 00:31:13,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,901 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:13,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238924803] [2021-02-24 00:31:13,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:13,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:31:13,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127434035] [2021-02-24 00:31:13,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:31:13,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:13,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:31:13,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:13,903 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 11 states. [2021-02-24 00:31:14,346 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-02-24 00:31:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:15,519 INFO L93 Difference]: Finished difference Result 175 states and 213 transitions. [2021-02-24 00:31:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:31:15,520 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2021-02-24 00:31:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:15,521 INFO L225 Difference]: With dead ends: 175 [2021-02-24 00:31:15,521 INFO L226 Difference]: Without dead ends: 126 [2021-02-24 00:31:15,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:31:15,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-02-24 00:31:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2021-02-24 00:31:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-02-24 00:31:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 138 transitions. [2021-02-24 00:31:15,584 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 138 transitions. Word has length 77 [2021-02-24 00:31:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:15,585 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 138 transitions. [2021-02-24 00:31:15,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:31:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 138 transitions. [2021-02-24 00:31:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-02-24 00:31:15,586 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:15,586 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-24 00:31:15,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-24 00:31:15,586 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:15,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1024908296, now seen corresponding path program 1 times [2021-02-24 00:31:15,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:15,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995887388] [2021-02-24 00:31:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:15,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:15,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:15,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:15,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:31:15,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:15,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:31:15,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:15,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:15,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:15,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:15,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:15,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:15,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:15,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:31:16,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:16,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:31:16,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:16,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:16,213 WARN L141 QuantifierPusher]: treesize reduction 34, result has 83.7 percent of original size [2021-02-24 00:31:16,215 WARN L147 QuantifierPusher]: treesize reduction 34, result has 83.7 percent of original size 174 [2021-02-24 00:31:16,361 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2021-02-24 00:31:16,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:16,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:16,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:16,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:16,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:16,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:16,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:16,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:16,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:16,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:16,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995887388] [2021-02-24 00:31:16,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:16,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-02-24 00:31:16,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120788142] [2021-02-24 00:31:16,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-24 00:31:16,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:16,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-24 00:31:16,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-02-24 00:31:16,539 INFO L87 Difference]: Start difference. First operand 120 states and 138 transitions. Second operand 22 states. [2021-02-24 00:31:19,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:19,047 INFO L93 Difference]: Finished difference Result 218 states and 272 transitions. [2021-02-24 00:31:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-24 00:31:19,047 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 79 [2021-02-24 00:31:19,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:19,050 INFO L225 Difference]: With dead ends: 218 [2021-02-24 00:31:19,050 INFO L226 Difference]: Without dead ends: 216 [2021-02-24 00:31:19,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=325, Invalid=1397, Unknown=0, NotChecked=0, Total=1722 [2021-02-24 00:31:19,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-02-24 00:31:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 153. [2021-02-24 00:31:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-02-24 00:31:19,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 183 transitions. [2021-02-24 00:31:19,177 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 183 transitions. Word has length 79 [2021-02-24 00:31:19,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:19,177 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 183 transitions. [2021-02-24 00:31:19,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-24 00:31:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 183 transitions. [2021-02-24 00:31:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-24 00:31:19,179 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:19,179 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-02-24 00:31:19,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-24 00:31:19,179 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:19,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:19,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1060321069, now seen corresponding path program 2 times [2021-02-24 00:31:19,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:19,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220461864] [2021-02-24 00:31:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:19,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:19,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:19,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:19,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:19,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:19,300 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:19,301 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:19,347 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:19,348 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:19,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:19,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:19,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:19,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:19,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:19,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:19,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:19,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:19,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:19,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:19,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 48 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:31:19,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220461864] [2021-02-24 00:31:19,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:19,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:31:19,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307531574] [2021-02-24 00:31:19,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:31:19,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:19,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:31:19,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:31:19,450 INFO L87 Difference]: Start difference. First operand 153 states and 183 transitions. Second operand 8 states. [2021-02-24 00:31:20,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:20,473 INFO L93 Difference]: Finished difference Result 227 states and 282 transitions. [2021-02-24 00:31:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:31:20,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2021-02-24 00:31:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:20,476 INFO L225 Difference]: With dead ends: 227 [2021-02-24 00:31:20,476 INFO L226 Difference]: Without dead ends: 145 [2021-02-24 00:31:20,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:31:20,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-02-24 00:31:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 131. [2021-02-24 00:31:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-02-24 00:31:20,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2021-02-24 00:31:20,569 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 88 [2021-02-24 00:31:20,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:20,569 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2021-02-24 00:31:20,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:31:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2021-02-24 00:31:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-24 00:31:20,570 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:20,570 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2021-02-24 00:31:20,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-24 00:31:20,571 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:20,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:20,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1444988714, now seen corresponding path program 1 times [2021-02-24 00:31:20,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:20,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939529471] [2021-02-24 00:31:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:20,641 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:20,642 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:20,673 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:20,674 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:20,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:20,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:20,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:20,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:20,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:20,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:20,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:20,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:20,794 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:20,795 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 101 [2021-02-24 00:31:20,875 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:20,876 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 107 [2021-02-24 00:31:20,921 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:20,922 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:20,982 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:20,982 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:20,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:20,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:21,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:21,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:21,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:21,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:21,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:21,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:21,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:21,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:21,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:31:21,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939529471] [2021-02-24 00:31:21,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:21,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:31:21,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755979121] [2021-02-24 00:31:21,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:31:21,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:21,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:31:21,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:21,139 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand 11 states. [2021-02-24 00:31:21,559 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-02-24 00:31:22,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:22,706 INFO L93 Difference]: Finished difference Result 193 states and 234 transitions. [2021-02-24 00:31:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:31:22,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 89 [2021-02-24 00:31:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:22,708 INFO L225 Difference]: With dead ends: 193 [2021-02-24 00:31:22,708 INFO L226 Difference]: Without dead ends: 144 [2021-02-24 00:31:22,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:31:22,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-02-24 00:31:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 132. [2021-02-24 00:31:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-02-24 00:31:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 150 transitions. [2021-02-24 00:31:22,789 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 150 transitions. Word has length 89 [2021-02-24 00:31:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:22,790 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 150 transitions. [2021-02-24 00:31:22,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:31:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 150 transitions. [2021-02-24 00:31:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-24 00:31:22,791 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:22,791 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2021-02-24 00:31:22,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-24 00:31:22,791 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:22,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:22,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1628405753, now seen corresponding path program 1 times [2021-02-24 00:31:22,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:22,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926000520] [2021-02-24 00:31:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:22,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:22,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:22,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:22,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:22,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:22,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:31:22,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:22,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:31:22,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:22,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:31:22,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:22,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-02-24 00:31:23,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:23,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-02-24 00:31:25,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:25,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:25,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:25,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:25,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:25,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:25,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:25,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:25,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:25,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:25,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:25,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:25,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:25,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:25,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:25,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:31:25,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926000520] [2021-02-24 00:31:25,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:25,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:31:25,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290436767] [2021-02-24 00:31:25,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:31:25,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:25,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:31:25,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:31:25,591 INFO L87 Difference]: Start difference. First operand 132 states and 150 transitions. Second operand 9 states. [2021-02-24 00:31:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:33,044 INFO L93 Difference]: Finished difference Result 193 states and 233 transitions. [2021-02-24 00:31:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:31:33,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2021-02-24 00:31:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:33,046 INFO L225 Difference]: With dead ends: 193 [2021-02-24 00:31:33,046 INFO L226 Difference]: Without dead ends: 144 [2021-02-24 00:31:33,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:31:33,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-02-24 00:31:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 133. [2021-02-24 00:31:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-24 00:31:33,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 151 transitions. [2021-02-24 00:31:33,112 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 151 transitions. Word has length 90 [2021-02-24 00:31:33,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:33,112 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 151 transitions. [2021-02-24 00:31:33,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:31:33,113 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 151 transitions. [2021-02-24 00:31:33,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-24 00:31:33,114 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:33,114 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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] [2021-02-24 00:31:33,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-24 00:31:33,114 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:33,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:33,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1447375536, now seen corresponding path program 1 times [2021-02-24 00:31:33,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:33,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416042284] [2021-02-24 00:31:33,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:33,204 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:33,205 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:33,240 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:33,240 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:33,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:33,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:33,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:33,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:33,397 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:33,398 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 107 [2021-02-24 00:31:33,539 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:33,540 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 111 [2021-02-24 00:31:33,603 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:33,604 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 95 [2021-02-24 00:31:33,708 WARN L141 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size [2021-02-24 00:31:33,709 WARN L147 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size 1 [2021-02-24 00:31:33,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:33,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:33,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:33,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:33,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:33,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:33,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:33,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:33,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:33,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:33,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:31:33,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416042284] [2021-02-24 00:31:33,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:33,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:31:33,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315329080] [2021-02-24 00:31:33,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:31:33,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:33,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:31:33,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:31:33,902 INFO L87 Difference]: Start difference. First operand 133 states and 151 transitions. Second operand 12 states. [2021-02-24 00:31:34,373 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-02-24 00:31:35,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:35,811 INFO L93 Difference]: Finished difference Result 186 states and 224 transitions. [2021-02-24 00:31:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:31:35,812 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2021-02-24 00:31:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:35,814 INFO L225 Difference]: With dead ends: 186 [2021-02-24 00:31:35,814 INFO L226 Difference]: Without dead ends: 137 [2021-02-24 00:31:35,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:31:35,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-02-24 00:31:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-02-24 00:31:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-02-24 00:31:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 153 transitions. [2021-02-24 00:31:35,906 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 153 transitions. Word has length 91 [2021-02-24 00:31:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:35,906 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 153 transitions. [2021-02-24 00:31:35,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:31:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 153 transitions. [2021-02-24 00:31:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-02-24 00:31:35,907 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:35,907 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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] [2021-02-24 00:31:35,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-24 00:31:35,908 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:35,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1815877407, now seen corresponding path program 1 times [2021-02-24 00:31:35,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:35,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655080716] [2021-02-24 00:31:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:36,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:36,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:36,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:31:36,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:36,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:31:36,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:36,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:36,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:36,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:36,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:36,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:36,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:31:36,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:36,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:31:36,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:36,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:36,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:31:36,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:31:36,800 WARN L141 QuantifierPusher]: treesize reduction 34, result has 83.7 percent of original size [2021-02-24 00:31:36,802 WARN L147 QuantifierPusher]: treesize reduction 34, result has 83.7 percent of original size 175 [2021-02-24 00:31:36,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:36,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:36,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:37,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:37,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:37,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:37,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:37,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:31:37,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655080716] [2021-02-24 00:31:37,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:37,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-02-24 00:31:37,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894256684] [2021-02-24 00:31:37,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-24 00:31:37,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:37,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-24 00:31:37,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2021-02-24 00:31:37,140 INFO L87 Difference]: Start difference. First operand 135 states and 153 transitions. Second operand 24 states. [2021-02-24 00:31:40,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:40,075 INFO L93 Difference]: Finished difference Result 156 states and 177 transitions. [2021-02-24 00:31:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-24 00:31:40,076 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 92 [2021-02-24 00:31:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:40,078 INFO L225 Difference]: With dead ends: 156 [2021-02-24 00:31:40,079 INFO L226 Difference]: Without dead ends: 154 [2021-02-24 00:31:40,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=364, Invalid=1706, Unknown=0, NotChecked=0, Total=2070 [2021-02-24 00:31:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-02-24 00:31:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 142. [2021-02-24 00:31:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-02-24 00:31:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 160 transitions. [2021-02-24 00:31:40,173 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 160 transitions. Word has length 92 [2021-02-24 00:31:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:40,174 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 160 transitions. [2021-02-24 00:31:40,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-24 00:31:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 160 transitions. [2021-02-24 00:31:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-02-24 00:31:40,178 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:40,179 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 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] [2021-02-24 00:31:40,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-24 00:31:40,180 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:40,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:40,180 INFO L82 PathProgramCache]: Analyzing trace with hash 982043247, now seen corresponding path program 1 times [2021-02-24 00:31:40,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:40,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697135016] [2021-02-24 00:31:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,269 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:40,270 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:40,305 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:40,306 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:40,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:40,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:40,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:40,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:40,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:40,504 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:40,505 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 101 [2021-02-24 00:31:40,657 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:40,658 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 107 [2021-02-24 00:31:40,714 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:40,715 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:40,765 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:40,766 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:40,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:40,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 00:31:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 20 proven. 82 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-24 00:31:40,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697135016] [2021-02-24 00:31:40,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:40,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:31:40,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946028415] [2021-02-24 00:31:40,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:31:40,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:40,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:31:40,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:31:40,972 INFO L87 Difference]: Start difference. First operand 142 states and 160 transitions. Second operand 12 states. [2021-02-24 00:31:41,258 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-02-24 00:31:41,486 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-02-24 00:31:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:43,009 INFO L93 Difference]: Finished difference Result 203 states and 242 transitions. [2021-02-24 00:31:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:31:43,010 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2021-02-24 00:31:43,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:43,012 INFO L225 Difference]: With dead ends: 203 [2021-02-24 00:31:43,012 INFO L226 Difference]: Without dead ends: 154 [2021-02-24 00:31:43,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:31:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-02-24 00:31:43,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 145. [2021-02-24 00:31:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-02-24 00:31:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 163 transitions. [2021-02-24 00:31:43,130 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 163 transitions. Word has length 102 [2021-02-24 00:31:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:43,130 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 163 transitions. [2021-02-24 00:31:43,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:31:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 163 transitions. [2021-02-24 00:31:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-02-24 00:31:43,138 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:43,138 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2021-02-24 00:31:43,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-02-24 00:31:43,139 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:43,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:43,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1657848329, now seen corresponding path program 1 times [2021-02-24 00:31:43,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:43,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005857742] [2021-02-24 00:31:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:43,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:43,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:43,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:43,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:31:43,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:43,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:31:43,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:43,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:43,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:43,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:43,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:43,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:43,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:31:43,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:43,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:31:43,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:43,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:43,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:31:43,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:43,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:31:44,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:31:44,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:44,104 WARN L141 QuantifierPusher]: treesize reduction 34, result has 83.8 percent of original size [2021-02-24 00:31:44,106 WARN L147 QuantifierPusher]: treesize reduction 34, result has 83.8 percent of original size 176 [2021-02-24 00:31:44,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:44,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:44,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:44,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:44,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:44,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:44,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:44,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:44,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:44,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:44,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:44,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 00:31:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:44,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:44,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-24 00:31:44,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005857742] [2021-02-24 00:31:44,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:44,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-02-24 00:31:44,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135672654] [2021-02-24 00:31:44,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-24 00:31:44,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:44,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-24 00:31:44,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2021-02-24 00:31:44,471 INFO L87 Difference]: Start difference. First operand 145 states and 163 transitions. Second operand 26 states. [2021-02-24 00:31:48,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:48,058 INFO L93 Difference]: Finished difference Result 237 states and 292 transitions. [2021-02-24 00:31:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-24 00:31:48,059 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 104 [2021-02-24 00:31:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:48,061 INFO L225 Difference]: With dead ends: 237 [2021-02-24 00:31:48,061 INFO L226 Difference]: Without dead ends: 235 [2021-02-24 00:31:48,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=409, Invalid=2041, Unknown=0, NotChecked=0, Total=2450 [2021-02-24 00:31:48,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-02-24 00:31:48,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 194. [2021-02-24 00:31:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-02-24 00:31:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 233 transitions. [2021-02-24 00:31:48,177 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 233 transitions. Word has length 104 [2021-02-24 00:31:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:48,177 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 233 transitions. [2021-02-24 00:31:48,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-24 00:31:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 233 transitions. [2021-02-24 00:31:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-24 00:31:48,179 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:48,179 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 3, 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] [2021-02-24 00:31:48,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-02-24 00:31:48,180 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:48,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1770357324, now seen corresponding path program 2 times [2021-02-24 00:31:48,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:48,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272036116] [2021-02-24 00:31:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:48,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:48,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:48,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:48,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:48,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:48,337 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:48,338 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:48,387 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:48,387 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:48,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 00:31:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-02-24 00:31:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 25 proven. 112 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-24 00:31:48,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272036116] [2021-02-24 00:31:48,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:48,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:31:48,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689655540] [2021-02-24 00:31:48,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:31:48,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:48,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:31:48,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:31:48,549 INFO L87 Difference]: Start difference. First operand 194 states and 233 transitions. Second operand 10 states. [2021-02-24 00:31:49,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:49,955 INFO L93 Difference]: Finished difference Result 266 states and 330 transitions. [2021-02-24 00:31:49,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:31:49,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2021-02-24 00:31:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:49,957 INFO L225 Difference]: With dead ends: 266 [2021-02-24 00:31:49,957 INFO L226 Difference]: Without dead ends: 168 [2021-02-24 00:31:49,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:31:49,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-02-24 00:31:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 160. [2021-02-24 00:31:50,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-02-24 00:31:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 180 transitions. [2021-02-24 00:31:50,038 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 180 transitions. Word has length 113 [2021-02-24 00:31:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:50,039 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 180 transitions. [2021-02-24 00:31:50,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:31:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 180 transitions. [2021-02-24 00:31:50,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-02-24 00:31:50,040 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:50,040 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 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] [2021-02-24 00:31:50,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-02-24 00:31:50,040 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:50,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:50,041 INFO L82 PathProgramCache]: Analyzing trace with hash -908701289, now seen corresponding path program 1 times [2021-02-24 00:31:50,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:50,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413900209] [2021-02-24 00:31:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:50,122 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:50,123 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:50,157 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:50,158 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:50,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:50,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:50,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:50,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:50,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:50,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:50,364 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:50,366 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 101 [2021-02-24 00:31:50,443 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:50,447 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 107 [2021-02-24 00:31:50,493 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:50,494 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:50,548 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:50,549 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:50,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:50,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:50,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:50,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:50,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:50,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:50,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:50,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:50,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:50,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:50,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:50,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 00:31:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:50,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-02-24 00:31:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:50,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-24 00:31:50,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413900209] [2021-02-24 00:31:50,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:50,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:31:50,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107753782] [2021-02-24 00:31:50,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:31:50,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:50,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:31:50,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:31:50,798 INFO L87 Difference]: Start difference. First operand 160 states and 180 transitions. Second operand 13 states. [2021-02-24 00:31:51,265 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-02-24 00:31:52,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:52,890 INFO L93 Difference]: Finished difference Result 211 states and 249 transitions. [2021-02-24 00:31:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:31:52,891 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2021-02-24 00:31:52,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:52,893 INFO L225 Difference]: With dead ends: 211 [2021-02-24 00:31:52,893 INFO L226 Difference]: Without dead ends: 160 [2021-02-24 00:31:52,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-02-24 00:31:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-02-24 00:31:52,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2021-02-24 00:31:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-02-24 00:31:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2021-02-24 00:31:52,989 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 114 [2021-02-24 00:31:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:52,990 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2021-02-24 00:31:52,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:31:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2021-02-24 00:31:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-02-24 00:31:52,990 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:52,990 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 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] [2021-02-24 00:31:52,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-02-24 00:31:52,991 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:52,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:52,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2111602534, now seen corresponding path program 1 times [2021-02-24 00:31:52,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:52,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533533990] [2021-02-24 00:31:52,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:53,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:53,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:53,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:53,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:31:53,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:53,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:31:53,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:53,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:53,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:53,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:53,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:53,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:53,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:31:53,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:53,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:31:53,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:53,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:53,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:31:53,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:31:53,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:31:53,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:53,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:53,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:53,933 WARN L141 QuantifierPusher]: treesize reduction 34, result has 83.9 percent of original size [2021-02-24 00:31:53,936 WARN L147 QuantifierPusher]: treesize reduction 34, result has 83.9 percent of original size 177 [2021-02-24 00:31:54,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:54,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:54,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 00:31:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-02-24 00:31:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 12 proven. 134 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-24 00:31:54,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533533990] [2021-02-24 00:31:54,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:54,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-02-24 00:31:54,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979175134] [2021-02-24 00:31:54,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-24 00:31:54,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:54,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-24 00:31:54,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-02-24 00:31:54,316 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand 28 states. [2021-02-24 00:31:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:57,647 INFO L93 Difference]: Finished difference Result 179 states and 200 transitions. [2021-02-24 00:31:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-24 00:31:57,648 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 115 [2021-02-24 00:31:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:57,650 INFO L225 Difference]: With dead ends: 179 [2021-02-24 00:31:57,650 INFO L226 Difference]: Without dead ends: 177 [2021-02-24 00:31:57,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=460, Invalid=2402, Unknown=0, NotChecked=0, Total=2862 [2021-02-24 00:31:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-02-24 00:31:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2021-02-24 00:31:57,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-02-24 00:31:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 183 transitions. [2021-02-24 00:31:57,733 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 183 transitions. Word has length 115 [2021-02-24 00:31:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:57,733 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 183 transitions. [2021-02-24 00:31:57,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-24 00:31:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 183 transitions. [2021-02-24 00:31:57,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-24 00:31:57,734 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:57,734 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 6, 5, 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] [2021-02-24 00:31:57,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-02-24 00:31:57,735 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:57,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1037123916, now seen corresponding path program 1 times [2021-02-24 00:31:57,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:57,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350379943] [2021-02-24 00:31:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:57,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:57,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:57,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:57,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:57,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:57,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:57,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:57,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:31:57,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:57,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:57,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:57,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:31:58,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:58,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:58,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:58,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:58,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:58,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:58,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:31:58,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:58,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:31:58,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:58,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:58,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:31:58,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:31:58,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:31:58,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:31:58,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:58,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:58,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:31:58,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:58,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:31:58,915 WARN L141 QuantifierPusher]: treesize reduction 34, result has 84.0 percent of original size [2021-02-24 00:31:58,916 WARN L147 QuantifierPusher]: treesize reduction 34, result has 84.0 percent of original size 178 [2021-02-24 00:31:59,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:59,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:59,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:59,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:31:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:59,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:31:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:59,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:31:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:59,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:31:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:59,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 00:31:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:59,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-02-24 00:31:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:59,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-02-24 00:31:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:59,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:59,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 14 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-02-24 00:31:59,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350379943] [2021-02-24 00:31:59,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:59,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-02-24 00:31:59,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880647810] [2021-02-24 00:31:59,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-24 00:31:59,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:59,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-24 00:31:59,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2021-02-24 00:31:59,331 INFO L87 Difference]: Start difference. First operand 165 states and 183 transitions. Second operand 30 states. [2021-02-24 00:32:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:04,043 INFO L93 Difference]: Finished difference Result 257 states and 312 transitions. [2021-02-24 00:32:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-24 00:32:04,044 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 125 [2021-02-24 00:32:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:04,048 INFO L225 Difference]: With dead ends: 257 [2021-02-24 00:32:04,048 INFO L226 Difference]: Without dead ends: 255 [2021-02-24 00:32:04,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=517, Invalid=2789, Unknown=0, NotChecked=0, Total=3306 [2021-02-24 00:32:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-02-24 00:32:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 218. [2021-02-24 00:32:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2021-02-24 00:32:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 257 transitions. [2021-02-24 00:32:04,183 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 257 transitions. Word has length 125 [2021-02-24 00:32:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:04,183 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 257 transitions. [2021-02-24 00:32:04,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-02-24 00:32:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 257 transitions. [2021-02-24 00:32:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-02-24 00:32:04,185 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:04,185 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 7, 6, 5, 4, 3, 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] [2021-02-24 00:32:04,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-02-24 00:32:04,185 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2066847233, now seen corresponding path program 2 times [2021-02-24 00:32:04,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:04,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893143195] [2021-02-24 00:32:04,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:04,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:04,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:04,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:04,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:32:04,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:32:04,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:32:04,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:32:04,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:32:04,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:32:04,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:04,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:04,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:04,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:32:04,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:32:04,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:04,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:04,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:04,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:32:04,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:04,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:32:05,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:32:05,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:32:05,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:32:05,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:05,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:32:05,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:32:05,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 00:32:05,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:32:05,351 WARN L141 QuantifierPusher]: treesize reduction 34, result has 84.0 percent of original size [2021-02-24 00:32:05,353 WARN L147 QuantifierPusher]: treesize reduction 34, result has 84.0 percent of original size 178 [2021-02-24 00:32:05,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:05,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:05,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:05,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 00:32:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:05,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:32:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:05,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-24 00:32:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:05,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 00:32:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:05,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 00:32:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:05,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-02-24 00:32:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:05,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-02-24 00:32:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:05,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-24 00:32:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:05,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:05,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 16 proven. 200 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-02-24 00:32:05,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893143195] [2021-02-24 00:32:05,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:05,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-02-24 00:32:05,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744897383] [2021-02-24 00:32:05,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-24 00:32:05,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:05,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-24 00:32:05,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-02-24 00:32:05,828 INFO L87 Difference]: Start difference. First operand 218 states and 257 transitions. Second operand 31 states. [2021-02-24 00:32:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:09,958 INFO L93 Difference]: Finished difference Result 218 states and 257 transitions. [2021-02-24 00:32:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-24 00:32:09,958 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 134 [2021-02-24 00:32:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:09,959 INFO L225 Difference]: With dead ends: 218 [2021-02-24 00:32:09,959 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:32:09,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=532, Invalid=2774, Unknown=0, NotChecked=0, Total=3306 [2021-02-24 00:32:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:32:09,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:32:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:32:09,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:32:09,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2021-02-24 00:32:09,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:09,962 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:32:09,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-02-24 00:32:09,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:32:09,962 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:32:09,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-02-24 00:32:09,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:32:10,349 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 303 [2021-02-24 00:32:10,768 WARN L202 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 170 [2021-02-24 00:32:11,037 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 324 [2021-02-24 00:32:11,558 WARN L202 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 393 DAG size of output: 330 [2021-02-24 00:32:12,317 WARN L202 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 287 [2021-02-24 00:32:12,496 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 60 [2021-02-24 00:32:12,980 WARN L202 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 187 [2021-02-24 00:32:13,200 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 319 [2021-02-24 00:32:13,604 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 180 [2021-02-24 00:32:13,865 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 387 DAG size of output: 312 [2021-02-24 00:32:14,137 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 177 [2021-02-24 00:32:14,432 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 394 DAG size of output: 320 [2021-02-24 00:32:14,714 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 420 DAG size of output: 230 [2021-02-24 00:32:15,108 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 260 [2021-02-24 00:32:15,250 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 71 [2021-02-24 00:32:15,483 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 152 [2021-02-24 00:32:15,613 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 25 [2021-02-24 00:32:15,892 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 20 [2021-02-24 00:32:16,266 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 45 [2021-02-24 00:32:16,375 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2021-02-24 00:32:16,482 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2021-02-24 00:32:16,954 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 20 [2021-02-24 00:32:17,804 WARN L202 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 38 [2021-02-24 00:32:18,087 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 20 [2021-02-24 00:32:19,386 WARN L202 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 273 DAG size of output: 37 [2021-02-24 00:32:19,658 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2021-02-24 00:32:19,794 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2021-02-24 00:32:19,945 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2021-02-24 00:32:21,063 WARN L202 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 172 DAG size of output: 37 [2021-02-24 00:32:21,346 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 20 [2021-02-24 00:32:21,943 WARN L202 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 42 [2021-02-24 00:32:22,257 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 20 [2021-02-24 00:32:22,616 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 28 [2021-02-24 00:32:22,721 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2021-02-24 00:32:22,860 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2021-02-24 00:32:24,187 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 302 DAG size of output: 38 [2021-02-24 00:32:24,379 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 22 [2021-02-24 00:32:24,507 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 27 [2021-02-24 00:32:25,447 WARN L202 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 38 [2021-02-24 00:32:25,769 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 27 [2021-02-24 00:32:26,314 WARN L202 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 45 [2021-02-24 00:32:26,318 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 00:32:26,318 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 00:32:26,318 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 00:32:26,318 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 00:32:26,318 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 00:32:26,319 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:32:26,319 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 00:32:26,319 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:32:26,319 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-24 00:32:26,319 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-24 00:32:26,319 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 00:32:26,319 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 00:32:26,319 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 00:32:26,319 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-24 00:32:26,319 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:32:26,320 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-24 00:32:26,320 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:32:26,320 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:32:26,320 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2021-02-24 00:32:26,320 INFO L189 CegarLoopUtils]: For program point L6(line 6) no Hoare annotation was computed. [2021-02-24 00:32:26,320 INFO L189 CegarLoopUtils]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-02-24 00:32:26,321 INFO L189 CegarLoopUtils]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2021-02-24 00:32:26,321 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2021-02-24 00:32:26,321 INFO L185 CegarLoopUtils]: At program point L35-2(lines 23 38) the Hoare annotation is: (or (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0)) (.cse0 (+ main_~l~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,321 INFO L185 CegarLoopUtils]: At program point L31(lines 31 38) the Hoare annotation is: (or (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= (let ((.cse2 (div main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~l~0 .cse1) 6))) (+ (* 4294967298 (div (+ main_~l~0 (* .cse0 (- 6)) .cse1) 4294967296)) (* 6 .cse0) (* 4294967296 .cse2) 1)))) main_~l~0) (<= main_~l~0 .cse3) (<= .cse3 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,322 INFO L185 CegarLoopUtils]: At program point L27(lines 27 38) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0)))) [2021-02-24 00:32:26,322 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 16 43) the Hoare annotation is: true [2021-02-24 00:32:26,322 INFO L185 CegarLoopUtils]: At program point L23(lines 23 38) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0)))) [2021-02-24 00:32:26,322 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,322 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,322 INFO L185 CegarLoopUtils]: At program point L19-2(line 19) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,322 INFO L185 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0)))) [2021-02-24 00:32:26,322 INFO L185 CegarLoopUtils]: At program point L40-1(lines 21 41) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0)))) [2021-02-24 00:32:26,323 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= (let ((.cse2 (div main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~l~0 .cse1) 6))) (+ (* 4294967296 (div (+ main_~l~0 (* .cse0 (- 6)) .cse1) 4294967296)) (* 6 .cse0) (* 4294967296 .cse2) 1)))) main_~l~0) (<= main_~l~0 (+ (* 2 (div (+ main_~l~0 (- 2)) 2)) 2)) (<= main_~l~0 .cse3) (<= .cse3 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,323 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= (let ((.cse2 (div main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~l~0 .cse1) 6))) (+ (* 4294967296 (div (+ main_~l~0 (* .cse0 (- 6)) .cse1) 4294967296)) (* 6 .cse0) (* 4294967296 .cse2) 1)))) main_~l~0) (<= main_~l~0 (+ (* 2 (div (+ main_~l~0 (- 2)) 2)) 2)) (<= main_~l~0 .cse3) (<= .cse3 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,323 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= main_~l~0 (+ (* 2 (div (+ main_~l~0 (- 2)) 2)) 2)) (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,323 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= main_~l~0 (+ (* 2 (div (+ main_~l~0 (- 2)) 2)) 2)) (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,323 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,324 INFO L185 CegarLoopUtils]: At program point L20-1(line 20) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,324 INFO L185 CegarLoopUtils]: At program point L33(lines 33 38) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= (let ((.cse2 (div main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~l~0 .cse1) 6))) (+ (* 4294967296 (div (+ main_~l~0 (* .cse0 (- 6)) .cse1) 4294967296)) (* 6 .cse0) (* 4294967296 .cse2) 1)))) main_~l~0) (<= main_~l~0 .cse3) (<= .cse3 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,324 INFO L185 CegarLoopUtils]: At program point L29(lines 29 38) the Hoare annotation is: (or (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= (let ((.cse2 (div main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~l~0 .cse1) 6))) (+ (* 4294967298 (div (+ main_~l~0 (* .cse0 (- 6)) .cse1) 4294967296)) (* 6 .cse0) (* 4294967296 .cse2) 1)))) main_~l~0) (<= main_~l~0 .cse3) (<= .cse3 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,324 INFO L185 CegarLoopUtils]: At program point L25(lines 25 38) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0)))) [2021-02-24 00:32:26,324 INFO L192 CegarLoopUtils]: At program point L21-2(lines 21 41) the Hoare annotation is: true [2021-02-24 00:32:26,324 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-24 00:32:26,324 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (or (= main_~i~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,324 INFO L185 CegarLoopUtils]: At program point L17-2(line 17) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,324 INFO L185 CegarLoopUtils]: At program point L17-3(line 17) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,324 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 16 43) the Hoare annotation is: true [2021-02-24 00:32:26,325 INFO L185 CegarLoopUtils]: At program point L38(line 38) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= main_~l~0 (+ (* 2 (div (+ main_~l~0 (- 1)) 2)) 1)) (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,325 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (or (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= (let ((.cse2 (div main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~l~0 .cse1) 6))) (+ (* 6148914694099828736 (div (+ main_~l~0 (* .cse0 (- 6)) .cse1) 4294967296)) (* 8589934592 .cse0) (* 6148914689804861440 .cse2) 1431655764)))) (* 1431655765 main_~l~0)) (<= main_~l~0 .cse3) (<= .cse3 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,325 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= (let ((.cse2 (div main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~l~0 .cse1) 6))) (+ (* 4294967296 (div (+ main_~l~0 (* .cse0 (- 6)) .cse1) 4294967296)) (* 6 .cse0) (* 4294967296 .cse2) 1)))) main_~l~0) (<= main_~l~0 .cse3) (<= .cse3 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,325 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 16 43) the Hoare annotation is: true [2021-02-24 00:32:26,325 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0)))) [2021-02-24 00:32:26,325 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~l~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,325 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,325 INFO L185 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v2~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,326 INFO L185 CegarLoopUtils]: At program point L18-3(line 18) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (= main_~v3~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v2~0 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,326 INFO L185 CegarLoopUtils]: At program point L18-4(line 18) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,326 INFO L185 CegarLoopUtils]: At program point L35(lines 35 38) the Hoare annotation is: (or (let ((.cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0))) (and (<= (let ((.cse2 (div main_~l~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~l~0 .cse1) 6))) (+ (* 4294967298 (div (+ main_~l~0 (* .cse0 (- 6)) .cse1) 4294967296)) (* 6 .cse0) (* 4294967296 .cse2) 1)))) main_~l~0) (<= main_~l~0 .cse3) (<= .cse3 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,326 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2021-02-24 00:32:26,326 INFO L185 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001))) [2021-02-24 00:32:26,326 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 8 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001)) (not (= __VERIFIER_assert_~cond 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,326 INFO L185 CegarLoopUtils]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001)) (not (= __VERIFIER_assert_~cond 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,326 INFO L185 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001))) [2021-02-24 00:32:26,326 INFO L185 CegarLoopUtils]: At program point L9-2(lines 8 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001)) (not (= __VERIFIER_assert_~cond 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:32:26,327 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001))) [2021-02-24 00:32:26,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:32:26 BoogieIcfgContainer [2021-02-24 00:32:26,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:32:26,349 INFO L168 Benchmark]: Toolchain (without parser) took 97462.40 ms. Allocated memory was 160.4 MB in the beginning and 402.7 MB in the end (delta: 242.2 MB). Free memory was 137.1 MB in the beginning and 244.3 MB in the end (delta: -107.2 MB). Peak memory consumption was 241.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:32:26,349 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 160.4 MB. Free memory is still 137.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:32:26,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.60 ms. Allocated memory is still 160.4 MB. Free memory was 136.1 MB in the beginning and 126.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:32:26,350 INFO L168 Benchmark]: Boogie Preprocessor took 48.20 ms. Allocated memory is still 160.4 MB. Free memory was 126.1 MB in the beginning and 124.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:32:26,350 INFO L168 Benchmark]: RCFGBuilder took 776.38 ms. Allocated memory is still 160.4 MB. Free memory was 124.5 MB in the beginning and 105.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:32:26,350 INFO L168 Benchmark]: TraceAbstraction took 96318.75 ms. Allocated memory was 160.4 MB in the beginning and 402.7 MB in the end (delta: 242.2 MB). Free memory was 105.2 MB in the beginning and 244.3 MB in the end (delta: -139.1 MB). Peak memory consumption was 210.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:32:26,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 160.4 MB. Free memory is still 137.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 290.60 ms. Allocated memory is still 160.4 MB. Free memory was 136.1 MB in the beginning and 126.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.20 ms. Allocated memory is still 160.4 MB. Free memory was 126.1 MB in the beginning and 124.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 776.38 ms. Allocated memory is still 160.4 MB. Free memory was 124.5 MB in the beginning and 105.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 96318.75 ms. Allocated memory was 160.4 MB in the beginning and 402.7 MB in the end (delta: 242.2 MB). Free memory was 105.2 MB in the beginning and 244.3 MB in the end (delta: -139.1 MB). Peak memory consumption was 210.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (!(SIZE <= 20000001) || !(20000001 <= SIZE)) || (l <= i + j + k + v1 + v2 + v3 + v4 + v5 && i + j + k + v1 + v2 + v3 + v4 + v5 <= l) - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 8]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: ((\old(cond) == 0 || !(SIZE <= 20000001)) || !(cond == 0)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 79.8s, OverallIterations: 33, TraceHistogramMax: 9, AutomataDifference: 56.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 16.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1344 SDtfs, 5994 SDslu, 2822 SDs, 0 SdLazy, 11525 SolverSat, 1119 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 25.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1003 GetRequests, 325 SyntacticMatches, 21 SemanticMatches, 657 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5253 ImplicationChecksByTransitivity, 38.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 33 MinimizatonAttempts, 501 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 58 LocationsWithAnnotation, 534 PreInvPairs, 735 NumberOfFragments, 1501 HoareAnnotationTreeSize, 534 FomulaSimplifications, 77259326581 FormulaSimplificationTreeSizeReduction, 5.5s HoareSimplificationTime, 58 FomulaSimplificationsInter, 112020 FormulaSimplificationTreeSizeReductionInter, 10.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 2486 NumberOfCodeBlocks, 2486 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2453 ConstructedInterpolants, 0 QuantifiedInterpolants, 2581365 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 1 PerfectInterpolantSequences, 998/2436 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...