/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:24:16,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:24:16,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:24:17,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:24:17,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:24:17,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:24:17,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:24:17,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:24:17,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:24:17,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:24:17,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:24:17,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:24:17,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:24:17,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:24:17,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:24:17,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:24:17,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:24:17,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:24:17,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:24:17,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:24:17,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:24:17,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:24:17,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:24:17,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:24:17,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:24:17,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:24:17,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:24:17,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:24:17,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:24:17,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:24:17,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:24:17,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:24:17,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:24:17,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:24:17,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:24:17,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:24:17,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:24:17,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:24:17,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:24:17,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:24:17,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:24:17,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:24:17,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:24:17,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:24:17,129 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:24:17,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:24:17,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:24:17,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:24:17,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:24:17,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:24:17,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:24:17,131 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:24:17,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:24:17,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:24:17,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:24:17,559 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:24:17,564 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:24:17,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2021-02-21 21:24:17,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58eba77a9/b2775394d95147f4a5cb9d33768ac8bb/FLAG8423120a4 [2021-02-21 21:24:18,330 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:24:18,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i [2021-02-21 21:24:18,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58eba77a9/b2775394d95147f4a5cb9d33768ac8bb/FLAG8423120a4 [2021-02-21 21:24:18,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58eba77a9/b2775394d95147f4a5cb9d33768ac8bb [2021-02-21 21:24:18,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:24:18,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:24:18,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:24:18,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:24:18,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:24:18,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:24:18" (1/1) ... [2021-02-21 21:24:18,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2982fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:18, skipping insertion in model container [2021-02-21 21:24:18,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:24:18" (1/1) ... [2021-02-21 21:24:18,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:24:18,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:24:18,939 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i[893,906] [2021-02-21 21:24:18,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:24:18,965 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:24:18,982 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i[893,906] [2021-02-21 21:24:18,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:24:19,006 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:24:19,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:19 WrapperNode [2021-02-21 21:24:19,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:24:19,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:24:19,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:24:19,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:24:19,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:19" (1/1) ... [2021-02-21 21:24:19,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:19" (1/1) ... [2021-02-21 21:24:19,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:19" (1/1) ... [2021-02-21 21:24:19,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:19" (1/1) ... [2021-02-21 21:24:19,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:19" (1/1) ... [2021-02-21 21:24:19,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:19" (1/1) ... [2021-02-21 21:24:19,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:19" (1/1) ... [2021-02-21 21:24:19,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:24:19,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:24:19,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:24:19,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:24:19,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:24:19,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:24:19,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:24:19,181 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:24:19,181 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:24:19,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:24:19,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:24:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:24:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:24:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:24:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:24:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:24:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:24:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:24:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:24:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:24:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:24:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:24:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:24:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:24:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:24:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:24:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:24:19,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:24:19,727 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 21:24:19,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:24:19 BoogieIcfgContainer [2021-02-21 21:24:19,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:24:19,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:24:19,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:24:19,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:24:19,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:24:18" (1/3) ... [2021-02-21 21:24:19,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638b0b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:24:19, skipping insertion in model container [2021-02-21 21:24:19,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:19" (2/3) ... [2021-02-21 21:24:19,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638b0b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:24:19, skipping insertion in model container [2021-02-21 21:24:19,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:24:19" (3/3) ... [2021-02-21 21:24:19,748 INFO L111 eAbstractionObserver]: Analyzing ICFG nested6.i [2021-02-21 21:24:19,756 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:24:19,761 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:24:19,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:24:19,820 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:24:19,820 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:24:19,821 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:24:19,821 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:24:19,821 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:24:19,821 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:24:19,821 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:24:19,821 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:24:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2021-02-21 21:24:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-21 21:24:19,860 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:19,862 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] [2021-02-21 21:24:19,862 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:19,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:19,872 INFO L82 PathProgramCache]: Analyzing trace with hash -136807662, now seen corresponding path program 1 times [2021-02-21 21:24:19,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:19,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394531856] [2021-02-21 21:24:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:19,971 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:20,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:20,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:20,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:20,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:20,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:20,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:20,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:20,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:20,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:20,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:20,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:20,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:20,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:20,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:20,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:20,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394531856] [2021-02-21 21:24:20,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:20,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:24:20,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564654777] [2021-02-21 21:24:20,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:24:20,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:20,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:24:20,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:24:20,390 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 6 states. [2021-02-21 21:24:20,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:20,943 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2021-02-21 21:24:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:24:20,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-02-21 21:24:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:20,957 INFO L225 Difference]: With dead ends: 97 [2021-02-21 21:24:20,957 INFO L226 Difference]: Without dead ends: 55 [2021-02-21 21:24:20,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:24:20,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-21 21:24:21,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-02-21 21:24:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-21 21:24:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-02-21 21:24:21,053 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 34 [2021-02-21 21:24:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:21,054 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-02-21 21:24:21,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:24:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-02-21 21:24:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 21:24:21,056 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:21,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:21,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:24:21,057 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:21,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:21,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1206531044, now seen corresponding path program 1 times [2021-02-21 21:24:21,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:21,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675514546] [2021-02-21 21:24:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:21,068 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:21,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:21,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:21,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:21,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:21,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:21,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:21,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:21,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:21,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:21,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:21,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:21,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:21,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:21,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:21,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675514546] [2021-02-21 21:24:21,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:21,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:24:21,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678148788] [2021-02-21 21:24:21,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:24:21,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:21,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:24:21,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:24:21,285 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 7 states. [2021-02-21 21:24:21,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:21,987 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2021-02-21 21:24:21,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:24:21,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2021-02-21 21:24:21,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:21,990 INFO L225 Difference]: With dead ends: 97 [2021-02-21 21:24:21,991 INFO L226 Difference]: Without dead ends: 95 [2021-02-21 21:24:21,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:24:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-21 21:24:22,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 66. [2021-02-21 21:24:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-21 21:24:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-02-21 21:24:22,057 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 36 [2021-02-21 21:24:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:22,057 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-02-21 21:24:22,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:24:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-02-21 21:24:22,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-21 21:24:22,059 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:22,059 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-21 21:24:22,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:24:22,060 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:22,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2135784643, now seen corresponding path program 1 times [2021-02-21 21:24:22,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:22,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677990252] [2021-02-21 21:24:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:22,064 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:22,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:22,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:22,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:22,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:22,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:22,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:22,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:22,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:24:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:22,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:22,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677990252] [2021-02-21 21:24:22,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:22,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:24:22,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923268206] [2021-02-21 21:24:22,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:24:22,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:22,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:24:22,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:24:22,187 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2021-02-21 21:24:22,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:22,516 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2021-02-21 21:24:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:24:22,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2021-02-21 21:24:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:22,520 INFO L225 Difference]: With dead ends: 93 [2021-02-21 21:24:22,521 INFO L226 Difference]: Without dead ends: 91 [2021-02-21 21:24:22,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:24:22,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-21 21:24:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-02-21 21:24:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-02-21 21:24:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2021-02-21 21:24:22,546 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 39 [2021-02-21 21:24:22,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:22,546 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2021-02-21 21:24:22,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:24:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2021-02-21 21:24:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-21 21:24:22,548 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:22,549 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-21 21:24:22,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:24:22,549 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:22,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1350553423, now seen corresponding path program 1 times [2021-02-21 21:24:22,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:22,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914135351] [2021-02-21 21:24:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:22,581 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:22,583 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:22,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:22,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:22,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:22,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:22,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:22,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:22,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:22,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:22,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:22,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:22,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 21:24:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:22,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:22,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:22,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914135351] [2021-02-21 21:24:22,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:22,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:24:22,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778096809] [2021-02-21 21:24:22,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:24:22,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:22,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:24:22,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:24:22,801 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand 9 states. [2021-02-21 21:24:23,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:23,562 INFO L93 Difference]: Finished difference Result 144 states and 169 transitions. [2021-02-21 21:24:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 21:24:23,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2021-02-21 21:24:23,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:23,566 INFO L225 Difference]: With dead ends: 144 [2021-02-21 21:24:23,566 INFO L226 Difference]: Without dead ends: 142 [2021-02-21 21:24:23,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:24:23,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-02-21 21:24:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2021-02-21 21:24:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-21 21:24:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-02-21 21:24:23,594 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 45 [2021-02-21 21:24:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:23,594 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-02-21 21:24:23,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:24:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-02-21 21:24:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-21 21:24:23,596 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:23,596 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-21 21:24:23,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:24:23,597 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:23,598 INFO L82 PathProgramCache]: Analyzing trace with hash -788712718, now seen corresponding path program 1 times [2021-02-21 21:24:23,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:23,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712771156] [2021-02-21 21:24:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:23,601 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:23,603 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:23,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:23,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:23,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:23,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:24:23,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:24:23,686 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-21 21:24:23,686 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-21 21:24:23,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:23,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:23,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:23,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712771156] [2021-02-21 21:24:23,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:23,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:24:23,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559294561] [2021-02-21 21:24:23,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:24:23,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:23,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:24:23,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:24:23,722 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand 7 states. [2021-02-21 21:24:24,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:24,049 INFO L93 Difference]: Finished difference Result 199 states and 239 transitions. [2021-02-21 21:24:24,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:24:24,050 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2021-02-21 21:24:24,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:24,052 INFO L225 Difference]: With dead ends: 199 [2021-02-21 21:24:24,052 INFO L226 Difference]: Without dead ends: 133 [2021-02-21 21:24:24,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:24:24,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-02-21 21:24:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2021-02-21 21:24:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-02-21 21:24:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2021-02-21 21:24:24,090 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 45 [2021-02-21 21:24:24,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:24,090 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2021-02-21 21:24:24,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:24:24,091 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2021-02-21 21:24:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 21:24:24,092 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:24,092 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-02-21 21:24:24,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:24:24,093 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:24,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:24,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1188569516, now seen corresponding path program 1 times [2021-02-21 21:24:24,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:24,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903644274] [2021-02-21 21:24:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:26,271 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-02-21 21:24:26,284 WARN L141 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size [2021-02-21 21:24:26,320 WARN L147 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size 109 [2021-02-21 21:24:26,322 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-21 21:24:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:26,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:26,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:26,381 WARN L141 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-02-21 21:24:26,382 WARN L147 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size 5 [2021-02-21 21:24:26,383 WARN L141 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-02-21 21:24:26,383 WARN L147 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size 5 [2021-02-21 21:24:26,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:26,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:26,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:26,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:26,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:26,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-02-21 21:24:26,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-02-21 21:24:26,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:26,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:24:26,605 WARN L141 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size [2021-02-21 21:24:26,612 WARN L147 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-02-21 21:24:26,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:24:26,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:24:26,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:24:26,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:24:26,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:24:26,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:24:26,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 21:24:26,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:24:26,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:24:26,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:24:26,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:24:26,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 21:24:26,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 21:24:26,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:24:26,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:24:26,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:24:26,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:24:26,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:24:26,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 21:24:26,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:26,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:24:27,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:24:27,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:27,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:24:27,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:24:27,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:27,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:24:27,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 21:24:27,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:27,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:24:27,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 21:24:27,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:27,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:24:27,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-21 21:24:27,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:27,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:24:27,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-21 21:24:27,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:27,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903644274] [2021-02-21 21:24:27,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:27,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-21 21:24:27,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652088036] [2021-02-21 21:24:27,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-21 21:24:27,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:27,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-21 21:24:27,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-02-21 21:24:27,228 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 20 states. [2021-02-21 21:24:30,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:30,744 INFO L93 Difference]: Finished difference Result 299 states and 378 transitions. [2021-02-21 21:24:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-21 21:24:30,751 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2021-02-21 21:24:30,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:30,755 INFO L225 Difference]: With dead ends: 299 [2021-02-21 21:24:30,756 INFO L226 Difference]: Without dead ends: 297 [2021-02-21 21:24:30,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=559, Invalid=2747, Unknown=0, NotChecked=0, Total=3306 [2021-02-21 21:24:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-02-21 21:24:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 192. [2021-02-21 21:24:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-02-21 21:24:30,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 239 transitions. [2021-02-21 21:24:30,830 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 239 transitions. Word has length 53 [2021-02-21 21:24:30,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:30,831 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 239 transitions. [2021-02-21 21:24:30,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-21 21:24:30,831 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 239 transitions. [2021-02-21 21:24:30,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-21 21:24:30,833 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:30,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:30,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:24:30,834 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:30,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:30,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1874994685, now seen corresponding path program 1 times [2021-02-21 21:24:30,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:30,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568584963] [2021-02-21 21:24:30,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:30,844 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:30,845 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:30,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:30,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:30,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:30,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:30,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:30,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:30,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:30,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 21:24:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:30,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:30,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568584963] [2021-02-21 21:24:30,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:30,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:24:30,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200877333] [2021-02-21 21:24:30,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:24:30,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:30,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:24:30,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:24:30,980 INFO L87 Difference]: Start difference. First operand 192 states and 239 transitions. Second operand 9 states. [2021-02-21 21:24:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:31,608 INFO L93 Difference]: Finished difference Result 364 states and 462 transitions. [2021-02-21 21:24:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 21:24:31,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2021-02-21 21:24:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:31,612 INFO L225 Difference]: With dead ends: 364 [2021-02-21 21:24:31,612 INFO L226 Difference]: Without dead ends: 239 [2021-02-21 21:24:31,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:24:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-02-21 21:24:31,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 221. [2021-02-21 21:24:31,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-02-21 21:24:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 277 transitions. [2021-02-21 21:24:31,682 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 277 transitions. Word has length 54 [2021-02-21 21:24:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:31,683 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 277 transitions. [2021-02-21 21:24:31,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:24:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 277 transitions. [2021-02-21 21:24:31,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 21:24:31,685 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:31,685 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1] [2021-02-21 21:24:31,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:24:31,685 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:31,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:31,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1555242361, now seen corresponding path program 1 times [2021-02-21 21:24:31,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:31,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032097046] [2021-02-21 21:24:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:33,850 WARN L141 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size [2021-02-21 21:24:33,855 WARN L147 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size 109 [2021-02-21 21:24:33,856 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-21 21:24:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:33,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:33,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:33,902 WARN L141 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-02-21 21:24:33,903 WARN L147 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size 5 [2021-02-21 21:24:33,904 WARN L141 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-02-21 21:24:33,904 WARN L147 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size 5 [2021-02-21 21:24:33,909 WARN L141 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-02-21 21:24:33,910 WARN L147 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size 5 [2021-02-21 21:24:33,916 WARN L141 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size [2021-02-21 21:24:33,917 WARN L147 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size 7 [2021-02-21 21:24:33,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:33,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:33,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:33,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:33,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-21 21:24:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:33,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:33,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:33,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-02-21 21:24:33,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-02-21 21:24:34,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:34,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:24:34,053 WARN L141 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size [2021-02-21 21:24:34,054 WARN L147 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-02-21 21:24:34,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:24:34,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:24:34,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:24:34,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:24:34,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:24:34,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:24:34,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 21:24:34,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:24:34,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:24:34,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:24:34,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:24:34,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 21:24:34,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 21:24:34,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:24:34,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:24:34,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:24:34,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:24:34,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:24:34,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 21:24:34,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:24:34,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:24:34,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:24:34,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 21:24:34,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:24:34,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 21:24:34,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 21:24:34,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:24:34,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:24:34,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 21:24:34,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:34,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:34,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032097046] [2021-02-21 21:24:34,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:34,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-21 21:24:34,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072039137] [2021-02-21 21:24:34,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-21 21:24:34,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:34,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-21 21:24:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-02-21 21:24:34,592 INFO L87 Difference]: Start difference. First operand 221 states and 277 transitions. Second operand 22 states. [2021-02-21 21:24:37,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:37,897 INFO L93 Difference]: Finished difference Result 304 states and 376 transitions. [2021-02-21 21:24:37,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-21 21:24:37,898 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2021-02-21 21:24:37,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:37,901 INFO L225 Difference]: With dead ends: 304 [2021-02-21 21:24:37,901 INFO L226 Difference]: Without dead ends: 302 [2021-02-21 21:24:37,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=744, Invalid=3948, Unknown=0, NotChecked=0, Total=4692 [2021-02-21 21:24:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-02-21 21:24:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 221. [2021-02-21 21:24:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-02-21 21:24:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 277 transitions. [2021-02-21 21:24:37,973 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 277 transitions. Word has length 62 [2021-02-21 21:24:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:37,974 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 277 transitions. [2021-02-21 21:24:37,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-21 21:24:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 277 transitions. [2021-02-21 21:24:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-21 21:24:37,975 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:37,975 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:37,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:24:37,976 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:37,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1992090965, now seen corresponding path program 1 times [2021-02-21 21:24:37,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:37,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225928312] [2021-02-21 21:24:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:37,994 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-21 21:24:37,997 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-21 21:24:38,045 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:38,066 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:38,069 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:38,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:38,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:38,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:38,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:24:38,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:24:38,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:24:38,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:38,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:38,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:38,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:38,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:38,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:38,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 21:24:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:38,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:38,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-21 21:24:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:38,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:38,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:38,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225928312] [2021-02-21 21:24:38,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:38,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 21:24:38,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362314741] [2021-02-21 21:24:38,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 21:24:38,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:38,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 21:24:38,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:24:38,369 INFO L87 Difference]: Start difference. First operand 221 states and 277 transitions. Second operand 12 states. [2021-02-21 21:24:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:39,173 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2021-02-21 21:24:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 21:24:39,174 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2021-02-21 21:24:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:39,181 INFO L225 Difference]: With dead ends: 271 [2021-02-21 21:24:39,181 INFO L226 Difference]: Without dead ends: 269 [2021-02-21 21:24:39,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-02-21 21:24:39,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-02-21 21:24:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 246. [2021-02-21 21:24:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2021-02-21 21:24:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 307 transitions. [2021-02-21 21:24:39,269 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 307 transitions. Word has length 63 [2021-02-21 21:24:39,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:39,269 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 307 transitions. [2021-02-21 21:24:39,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 21:24:39,269 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 307 transitions. [2021-02-21 21:24:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-21 21:24:39,270 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:39,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:39,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 21:24:39,271 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:39,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1661366098, now seen corresponding path program 2 times [2021-02-21 21:24:39,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:39,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538188739] [2021-02-21 21:24:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:39,284 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:39,285 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:39,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:39,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:39,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:39,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:39,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:39,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:39,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:39,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:39,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:39,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 21:24:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:39,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:24:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:39,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:39,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-21 21:24:39,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538188739] [2021-02-21 21:24:39,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:39,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:24:39,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734526293] [2021-02-21 21:24:39,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:24:39,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:39,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:24:39,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:24:39,412 INFO L87 Difference]: Start difference. First operand 246 states and 307 transitions. Second operand 9 states. [2021-02-21 21:24:40,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:40,152 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2021-02-21 21:24:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:24:40,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2021-02-21 21:24:40,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:40,155 INFO L225 Difference]: With dead ends: 302 [2021-02-21 21:24:40,155 INFO L226 Difference]: Without dead ends: 300 [2021-02-21 21:24:40,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-02-21 21:24:40,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-02-21 21:24:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 242. [2021-02-21 21:24:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2021-02-21 21:24:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 299 transitions. [2021-02-21 21:24:40,226 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 299 transitions. Word has length 63 [2021-02-21 21:24:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:40,227 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 299 transitions. [2021-02-21 21:24:40,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:24:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 299 transitions. [2021-02-21 21:24:40,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-21 21:24:40,228 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:40,228 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:40,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 21:24:40,229 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:40,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:40,229 INFO L82 PathProgramCache]: Analyzing trace with hash 583364086, now seen corresponding path program 1 times [2021-02-21 21:24:40,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:40,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147205000] [2021-02-21 21:24:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:40,246 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-21 21:24:40,248 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-21 21:24:40,287 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:40,288 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:40,315 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:40,317 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:40,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:40,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:40,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:40,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:40,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:24:40,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:24:40,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:40,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:40,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:40,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:40,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:40,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:24:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:40,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-21 21:24:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:40,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:40,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-21 21:24:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:40,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:40,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-02-21 21:24:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:40,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:40,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-21 21:24:40,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147205000] [2021-02-21 21:24:40,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:40,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 21:24:40,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470958921] [2021-02-21 21:24:40,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 21:24:40,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:40,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 21:24:40,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:24:40,490 INFO L87 Difference]: Start difference. First operand 242 states and 299 transitions. Second operand 10 states. [2021-02-21 21:24:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:41,363 INFO L93 Difference]: Finished difference Result 448 states and 552 transitions. [2021-02-21 21:24:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:24:41,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2021-02-21 21:24:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:41,367 INFO L225 Difference]: With dead ends: 448 [2021-02-21 21:24:41,367 INFO L226 Difference]: Without dead ends: 288 [2021-02-21 21:24:41,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:24:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-02-21 21:24:41,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 253. [2021-02-21 21:24:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2021-02-21 21:24:41,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 311 transitions. [2021-02-21 21:24:41,440 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 311 transitions. Word has length 86 [2021-02-21 21:24:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:41,440 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 311 transitions. [2021-02-21 21:24:41,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 21:24:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 311 transitions. [2021-02-21 21:24:41,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-02-21 21:24:41,452 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:41,452 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-02-21 21:24:41,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 21:24:41,452 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:41,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:41,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1981971922, now seen corresponding path program 2 times [2021-02-21 21:24:41,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:41,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150561315] [2021-02-21 21:24:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:41,469 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-21 21:24:41,472 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-21 21:24:41,639 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-02-21 21:24:41,643 WARN L141 QuantifierPusher]: treesize reduction 3, result has 96.4 percent of original size [2021-02-21 21:24:41,647 WARN L147 QuantifierPusher]: treesize reduction 3, result has 96.4 percent of original size 80 [2021-02-21 21:24:41,777 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.8 percent of original size [2021-02-21 21:24:41,783 INFO L424 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-02-21 21:24:41,783 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-21 21:24:41,788 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,790 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.8 percent of original size 60 [2021-02-21 21:24:41,824 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:41,825 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:41,854 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:41,856 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:41,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:41,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:41,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:41,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:41,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:41,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:41,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:41,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:41,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:41,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:24:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:41,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-21 21:24:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:41,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:41,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-21 21:24:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:41,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:41,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-21 21:24:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:41,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-02-21 21:24:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:41,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:41,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 21:24:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:41,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:41,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-21 21:24:42,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150561315] [2021-02-21 21:24:42,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:42,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:24:42,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054518020] [2021-02-21 21:24:42,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:24:42,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:42,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:24:42,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:24:42,003 INFO L87 Difference]: Start difference. First operand 253 states and 311 transitions. Second operand 9 states. [2021-02-21 21:24:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:42,565 INFO L93 Difference]: Finished difference Result 357 states and 438 transitions. [2021-02-21 21:24:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 21:24:42,565 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2021-02-21 21:24:42,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:42,566 INFO L225 Difference]: With dead ends: 357 [2021-02-21 21:24:42,567 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:24:42,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-02-21 21:24:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:24:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:24:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:24:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:24:42,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2021-02-21 21:24:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:42,569 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:24:42,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:24:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:24:42,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:24:42,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 21:24:42,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:24:42,753 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2021-02-21 21:24:42,886 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2021-02-21 21:24:43,182 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 108 [2021-02-21 21:24:43,471 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 104 [2021-02-21 21:24:43,611 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 102 [2021-02-21 21:24:43,742 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 98 [2021-02-21 21:24:43,941 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 92 [2021-02-21 21:24:44,520 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 139 [2021-02-21 21:24:45,064 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 130 [2021-02-21 21:24:45,829 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 27 [2021-02-21 21:24:45,963 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 11 [2021-02-21 21:24:46,395 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 28 [2021-02-21 21:24:46,704 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 28 [2021-02-21 21:24:46,952 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 19 [2021-02-21 21:24:47,182 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 15 [2021-02-21 21:24:47,421 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 14 [2021-02-21 21:24:47,980 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 16 [2021-02-21 21:24:48,091 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 23 [2021-02-21 21:24:48,312 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 23 [2021-02-21 21:24:48,439 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 23 [2021-02-21 21:24:48,731 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 14 [2021-02-21 21:24:48,878 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 21 [2021-02-21 21:24:49,025 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 25 [2021-02-21 21:24:49,139 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2021-02-21 21:24:49,497 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:24:49,497 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:24:49,498 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:24:49,498 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:24:49,498 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:24:49,498 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:49,498 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:49,498 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:24:49,498 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:24:49,498 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:24:49,499 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:24:49,499 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-21 21:24:49,499 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:24:49,499 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:24:49,499 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:24:49,500 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:49,500 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:24:49,500 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:24:49,501 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-21 21:24:49,501 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-21 21:24:49,501 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:49,501 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:49,501 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:49,502 INFO L185 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (<= main_~n~0 main_~k~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and (<= (+ .cse0 1) main_~j~0) .cse1 (<= (+ main_~j~0 1) main_~n~0) .cse2) (and (<= .cse0 main_~j~0) (< main_~j~0 main_~n~0) (<= 0 (+ |main_#t~nondet7| 2147483648)) .cse1 .cse2 (<= |main_#t~nondet7| 2147483647)))) [2021-02-21 21:24:49,502 INFO L185 CegarLoopUtils]: At program point L35-3(line 35) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (<= main_~n~0 main_~k~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and (<= (+ .cse0 1) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) .cse1 .cse2) (and (<= .cse0 main_~j~0) (< main_~j~0 main_~n~0) (= |main_#t~nondet7| 0) .cse1 .cse2))) [2021-02-21 21:24:49,502 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-21 21:24:49,502 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-21 21:24:49,502 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-21 21:24:49,502 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 48) the Hoare annotation is: true [2021-02-21 21:24:49,502 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (< main_~j~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-21 21:24:49,503 INFO L185 CegarLoopUtils]: At program point L36-3(line 36) the Hoare annotation is: (let ((.cse1 (* 2 main_~i~0))) (let ((.cse0 (<= .cse1 main_~j~0)) (.cse2 (<= .cse1 |main_#t~post8|))) (or (and .cse0 (<= .cse1 main_~k~0) (<= |main_#t~post8| main_~j~0) .cse2 (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~j~0)) (and (<= (+ |main_#t~post8| 1) main_~n~0) .cse0 (< main_~j~0 main_~n~0) (<= (+ main_~k~0 1) main_~n~0) .cse2 (<= (+ .cse1 1) main_~k~0))))) [2021-02-21 21:24:49,503 INFO L185 CegarLoopUtils]: At program point L36-4(line 36) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ |main_#t~post8| 1) main_~n~0) (<= .cse0 main_~j~0) (< main_~j~0 main_~n~0) (<= .cse0 |main_#t~post8|) (<= (+ .cse0 1) main_~k~0) (<= main_~k~0 main_~n~0))) [2021-02-21 21:24:49,503 INFO L185 CegarLoopUtils]: At program point L36-5(lines 36 38) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0))) [2021-02-21 21:24:49,503 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-21 21:24:49,503 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-21 21:24:49,503 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (< main_~j~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-21 21:24:49,503 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-21 21:24:49,504 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (< main_~j~0 main_~n~0) (<= (+ main_~k~0 1) main_~n~0))) [2021-02-21 21:24:49,504 INFO L185 CegarLoopUtils]: At program point L37-1(lines 36 38) the Hoare annotation is: (let ((.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse0 (* 2 main_~i~0))) (or (and (<= .cse0 main_~k~0) .cse1 (<= main_~k~0 main_~j~0)) (and (<= .cse0 main_~j~0) (<= (+ main_~k~0 1) main_~n~0) .cse1 (<= (+ .cse0 1) main_~k~0)))) [2021-02-21 21:24:49,504 INFO L185 CegarLoopUtils]: At program point L33-2(lines 33 45) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~j~0) (<= main_~n~0 main_~k~0) (exists ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (let ((.cse0 (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0))) (and (not (= .cse0 0)) (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1) (= .cse0 (ite (<= main_~k~0 main_~n~0) 1 0)) (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1))))) [2021-02-21 21:24:49,504 INFO L185 CegarLoopUtils]: At program point L33-3(line 33) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~j~0) (<= main_~n~0 main_~k~0) (exists ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (let ((.cse0 (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0))) (and (not (= .cse0 0)) (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1) (= .cse0 (ite (<= main_~k~0 main_~n~0) 1 0)) (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1))))) [2021-02-21 21:24:49,504 INFO L192 CegarLoopUtils]: At program point L29(lines 29 32) the Hoare annotation is: true [2021-02-21 21:24:49,504 INFO L185 CegarLoopUtils]: At program point L33-4(line 33) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-21 21:24:49,505 INFO L185 CegarLoopUtils]: At program point L29-1(lines 29 32) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-21 21:24:49,505 INFO L185 CegarLoopUtils]: At program point L33-5(lines 33 45) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and (<= main_~n~0 main_~j~0) .cse0 .cse1) (and (= main_~i~0 0) .cse0 .cse1))) [2021-02-21 21:24:49,505 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-21 21:24:49,505 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-21 21:24:49,505 INFO L192 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: true [2021-02-21 21:24:49,505 INFO L192 CegarLoopUtils]: At program point L46(lines 24 48) the Hoare annotation is: true [2021-02-21 21:24:49,505 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 48) the Hoare annotation is: true [2021-02-21 21:24:49,506 INFO L185 CegarLoopUtils]: At program point L42(lines 34 44) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0)) [2021-02-21 21:24:49,506 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and (<= main_~n~0 main_~j~0) .cse0 .cse1) (and (= main_~i~0 0) .cse0 (<= (+ main_~i~0 1) main_~n~0) .cse1))) [2021-02-21 21:24:49,506 INFO L185 CegarLoopUtils]: At program point L34-3(line 34) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~n~0 main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= .cse0 |main_#t~post6|) (<= main_~k~0 main_~n~0))) [2021-02-21 21:24:49,506 INFO L185 CegarLoopUtils]: At program point L34-4(line 34) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ .cse0 1) main_~j~0) (<= main_~n~0 main_~k~0) (<= .cse0 |main_#t~post6|) (<= main_~k~0 main_~n~0))) [2021-02-21 21:24:49,506 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 48) the Hoare annotation is: true [2021-02-21 21:24:49,506 INFO L185 CegarLoopUtils]: At program point L34-5(lines 34 44) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-21 21:24:49,506 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-21 21:24:49,506 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-21 21:24:49,507 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-21 21:24:49,507 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (< main_~j~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-21 21:24:49,507 INFO L185 CegarLoopUtils]: At program point L35-1(lines 35 43) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (<= main_~n~0 main_~k~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and (<= (+ .cse0 1) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) .cse1 .cse2) (and (<= .cse0 main_~j~0) (< main_~j~0 main_~n~0) (<= 0 (+ |main_#t~nondet7| 2147483648)) .cse1 .cse2 (<= |main_#t~nondet7| 2147483647)))) [2021-02-21 21:24:49,507 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-21 21:24:49,507 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-21 21:24:49,507 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-21 21:24:49,508 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-21 21:24:49,508 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-21 21:24:49,508 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-21 21:24:49,508 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-21 21:24:49,535 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:24:49 BoogieIcfgContainer [2021-02-21 21:24:49,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:24:49,543 INFO L168 Benchmark]: Toolchain (without parser) took 30824.35 ms. Allocated memory was 173.0 MB in the beginning and 299.9 MB in the end (delta: 126.9 MB). Free memory was 149.5 MB in the beginning and 131.5 MB in the end (delta: 17.9 MB). Peak memory consumption was 174.3 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:49,543 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 173.0 MB. Free memory was 148.2 MB in the beginning and 148.1 MB in the end (delta: 101.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:24:49,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.04 ms. Allocated memory is still 173.0 MB. Free memory was 148.3 MB in the beginning and 138.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:49,545 INFO L168 Benchmark]: Boogie Preprocessor took 41.40 ms. Allocated memory is still 173.0 MB. Free memory was 138.7 MB in the beginning and 137.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:49,545 INFO L168 Benchmark]: RCFGBuilder took 682.18 ms. Allocated memory is still 173.0 MB. Free memory was 137.0 MB in the beginning and 150.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:49,545 INFO L168 Benchmark]: TraceAbstraction took 29804.49 ms. Allocated memory was 173.0 MB in the beginning and 299.9 MB in the end (delta: 126.9 MB). Free memory was 150.4 MB in the beginning and 131.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 175.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:49,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 173.0 MB. Free memory was 148.2 MB in the beginning and 148.1 MB in the end (delta: 101.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.04 ms. Allocated memory is still 173.0 MB. Free memory was 148.3 MB in the beginning and 138.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.40 ms. Allocated memory is still 173.0 MB. Free memory was 138.7 MB in the beginning and 137.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 682.18 ms. Allocated memory is still 173.0 MB. Free memory was 137.0 MB in the beginning and 150.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 29804.49 ms. Allocated memory was 173.0 MB in the beginning and 299.9 MB in the end (delta: 126.9 MB). Free memory was 150.4 MB in the beginning and 131.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 175.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 33]: Loop Invariant Derived loop invariant: ((n <= j && n <= k) && k <= n) || ((i == 0 && n <= k) && k <= n) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (2 * i <= j && n <= k) && k <= n - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((2 * i <= j && 2 * i <= k) && j + 1 <= n) && k <= n - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert [2021-02-21 21:24:49,561 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,562 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 21:24:49,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] Derived contract for procedure __VERIFIER_assert: (\old(cond) == 0 || \old(cond) == cond) || (forall v_main_~n~0_BEFORE_CALL_1 : int, v_main_~k~0_BEFORE_CALL_1 : int, v_main_~j~0_BEFORE_CALL_1 : int, v_main_~i~0_BEFORE_CALL_1 : int :: (!((if v_main_~n~0_BEFORE_CALL_1 <= v_main_~k~0_BEFORE_CALL_1 then 1 else 0) == \old(cond)) || !(v_main_~j~0_BEFORE_CALL_1 < v_main_~n~0_BEFORE_CALL_1)) || !(2 * v_main_~i~0_BEFORE_CALL_1 <= v_main_~j~0_BEFORE_CALL_1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.7s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 599 SDtfs, 1495 SDslu, 884 SDs, 0 SdLazy, 3650 SolverSat, 483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2927 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 409 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 58 LocationsWithAnnotation, 611 PreInvPairs, 870 NumberOfFragments, 785 HoareAnnotationTreeSize, 611 FomulaSimplifications, 2147470 FormulaSimplificationTreeSizeReduction, 2.9s HoareSimplificationTime, 58 FomulaSimplificationsInter, 31949 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...