/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 07:40:03,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 07:40:03,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 07:40:03,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 07:40:03,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 07:40:03,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 07:40:03,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 07:40:03,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 07:40:03,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 07:40:03,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 07:40:03,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 07:40:03,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 07:40:03,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 07:40:03,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 07:40:03,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 07:40:03,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 07:40:03,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 07:40:03,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 07:40:03,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 07:40:03,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 07:40:03,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 07:40:03,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 07:40:03,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 07:40:03,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 07:40:03,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 07:40:03,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 07:40:03,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 07:40:03,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 07:40:03,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 07:40:03,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 07:40:03,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 07:40:03,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 07:40:03,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 07:40:03,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 07:40:03,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 07:40:03,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 07:40:04,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 07:40:04,012 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 07:40:04,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 07:40:04,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 07:40:04,014 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 07:40:04,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 07:40:04,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 07:40:04,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 07:40:04,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 07:40:04,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 07:40:04,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 07:40:04,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 07:40:04,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 07:40:04,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 07:40:04,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 07:40:04,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 07:40:04,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 07:40:04,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 07:40:04,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 07:40:04,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 07:40:04,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 07:40:04,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 07:40:04,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 07:40:04,017 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 07:40:04,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 07:40:04,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 07:40:04,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 07:40:04,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 07:40:04,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 07:40:04,412 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 07:40:04,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv3.c [2021-04-16 07:40:04,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f924f4b/44541273b8e84cca9d46b8d65679ea20/FLAG9451dc190 [2021-04-16 07:40:04,911 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 07:40:04,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c [2021-04-16 07:40:04,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f924f4b/44541273b8e84cca9d46b8d65679ea20/FLAG9451dc190 [2021-04-16 07:40:05,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f924f4b/44541273b8e84cca9d46b8d65679ea20 [2021-04-16 07:40:05,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 07:40:05,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 07:40:05,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 07:40:05,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 07:40:05,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 07:40:05,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:40:05" (1/1) ... [2021-04-16 07:40:05,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f16836a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05, skipping insertion in model container [2021-04-16 07:40:05,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:40:05" (1/1) ... [2021-04-16 07:40:05,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 07:40:05,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 07:40:05,457 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469] [2021-04-16 07:40:05,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:40:05,486 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 07:40:05,497 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469] [2021-04-16 07:40:05,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:40:05,512 INFO L208 MainTranslator]: Completed translation [2021-04-16 07:40:05,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05 WrapperNode [2021-04-16 07:40:05,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 07:40:05,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 07:40:05,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 07:40:05,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 07:40:05,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05" (1/1) ... [2021-04-16 07:40:05,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05" (1/1) ... [2021-04-16 07:40:05,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05" (1/1) ... [2021-04-16 07:40:05,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05" (1/1) ... [2021-04-16 07:40:05,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05" (1/1) ... [2021-04-16 07:40:05,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05" (1/1) ... [2021-04-16 07:40:05,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05" (1/1) ... [2021-04-16 07:40:05,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 07:40:05,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 07:40:05,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 07:40:05,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 07:40:05,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05" (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 [2021-04-16 07:40:05,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 07:40:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 07:40:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 07:40:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 07:40:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 07:40:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 07:40:05,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 07:40:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 07:40:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 07:40:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 07:40:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 07:40:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 07:40:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 07:40:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 07:40:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 07:40:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 07:40:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 07:40:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 07:40:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 07:40:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 07:40:05,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 07:40:05,970 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 07:40:05,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:40:05 BoogieIcfgContainer [2021-04-16 07:40:05,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 07:40:05,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 07:40:05,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 07:40:05,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 07:40:05,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 07:40:05" (1/3) ... [2021-04-16 07:40:05,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81d9dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:40:05, skipping insertion in model container [2021-04-16 07:40:05,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:40:05" (2/3) ... [2021-04-16 07:40:05,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81d9dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:40:05, skipping insertion in model container [2021-04-16 07:40:05,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:40:05" (3/3) ... [2021-04-16 07:40:05,994 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv3.c [2021-04-16 07:40:05,999 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 07:40:06,003 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 07:40:06,019 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 07:40:06,037 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 07:40:06,037 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 07:40:06,037 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 07:40:06,038 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 07:40:06,038 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 07:40:06,038 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 07:40:06,038 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 07:40:06,038 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 07:40:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 07:40:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 07:40:06,056 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:40:06,057 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:40:06,057 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:40:06,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:40:06,062 INFO L82 PathProgramCache]: Analyzing trace with hash -380103047, now seen corresponding path program 1 times [2021-04-16 07:40:06,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:40:06,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611132113] [2021-04-16 07:40:06,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:40:06,126 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:40:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:40:06,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:40:06,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:40:06,255 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 07:40:06,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:40:06,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:40:06,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:40:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:40:06,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:40:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:40:06,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611132113] [2021-04-16 07:40:06,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:40:06,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 07:40:06,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707145978] [2021-04-16 07:40:06,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 07:40:06,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:40:06,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 07:40:06,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 07:40:06,415 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:40:06,739 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2021-04-16 07:40:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 07:40:06,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-16 07:40:06,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:40:06,748 INFO L225 Difference]: With dead ends: 36 [2021-04-16 07:40:06,748 INFO L226 Difference]: Without dead ends: 16 [2021-04-16 07:40:06,751 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 242.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-04-16 07:40:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-04-16 07:40:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-04-16 07:40:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-04-16 07:40:06,786 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-04-16 07:40:06,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:40:06,786 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-04-16 07:40:06,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-04-16 07:40:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 07:40:06,787 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:40:06,787 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:40:06,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 07:40:06,788 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:40:06,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:40:06,788 INFO L82 PathProgramCache]: Analyzing trace with hash 437044508, now seen corresponding path program 1 times [2021-04-16 07:40:06,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:40:06,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789321070] [2021-04-16 07:40:06,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:40:06,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 07:40:06,826 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_7| 2147483648)) (<= |v_main_#t~nondet7_7| 2147483647) (< v_main_~i~0_14 v_~SIZE~0_6) (not (= |v_main_#t~nondet7_7| 0))) InVars {~SIZE~0=v_~SIZE~0_6, main_~i~0=v_main_~i~0_14, main_#t~nondet7=|v_main_#t~nondet7_7|} OutVars{~SIZE~0=v_~SIZE~0_6, main_~i~0=v_main_~i~0_14, main_#t~nondet7=|v_main_#t~nondet7_7|} AuxVars[] AssignedVars[] [2021-04-16 07:40:06,839 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 88.1 percent of original size [2021-04-16 07:40:06,847 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,849 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,863 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,867 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,874 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 07:40:06,913 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:40:06,917 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,919 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 07:40:06,921 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,927 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,931 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,932 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 07:40:06,937 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,941 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,947 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,951 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,955 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,958 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 07:40:06,963 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,967 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,973 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,977 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,982 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,986 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,989 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:06,996 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,000 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,002 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 88.1 percent of original size 90 [2021-04-16 07:40:07,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 07:40:07,071 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:40:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:40:07,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:40:07,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:40:07,231 INFO L142 QuantifierPusher]: treesize reduction 16, result has 65.2 percent of original size [2021-04-16 07:40:07,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 07:40:07,262 INFO L142 QuantifierPusher]: treesize reduction 158, result has 7.6 percent of original size [2021-04-16 07:40:07,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 07:40:07,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:40:07,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:40:07,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:40:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:40:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:40:07,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:40:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:40:07,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:07,396 INFO L142 QuantifierPusher]: treesize reduction 6, result has 92.4 percent of original size [2021-04-16 07:40:07,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 07:40:07,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 07:40:07,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:07,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 07:40:07,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 07:40:07,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:07,586 INFO L142 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-04-16 07:40:07,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-04-16 07:40:07,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-04-16 07:40:07,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:07,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:40:07,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789321070] [2021-04-16 07:40:07,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:40:07,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 07:40:07,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35690190] [2021-04-16 07:40:07,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 07:40:07,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:40:07,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 07:40:07,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-04-16 07:40:07,638 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:07,829 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-04-16 07:40:07,989 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2021-04-16 07:40:08,271 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2021-04-16 07:40:08,456 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2021-04-16 07:40:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:40:08,647 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-04-16 07:40:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 07:40:08,648 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-16 07:40:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:40:08,649 INFO L225 Difference]: With dead ends: 24 [2021-04-16 07:40:08,649 INFO L226 Difference]: Without dead ends: 18 [2021-04-16 07:40:08,650 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1031.3ms TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-04-16 07:40:08,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-04-16 07:40:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-04-16 07:40:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-04-16 07:40:08,657 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-04-16 07:40:08,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:40:08,657 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-04-16 07:40:08,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:08,658 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-04-16 07:40:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 07:40:08,658 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:40:08,658 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:40:08,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 07:40:08,658 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:40:08,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:40:08,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2082915426, now seen corresponding path program 1 times [2021-04-16 07:40:08,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:40:08,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417761737] [2021-04-16 07:40:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:40:08,664 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-04-16 07:40:08,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:40:08,666 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_13| 0) (< v_main_~i~0_20 v_~SIZE~0_10)) InVars {~SIZE~0=v_~SIZE~0_10, main_~i~0=v_main_~i~0_20, main_#t~nondet7=|v_main_#t~nondet7_13|} OutVars{~SIZE~0=v_~SIZE~0_10, main_~i~0=v_main_~i~0_20, main_#t~nondet7=|v_main_#t~nondet7_13|} AuxVars[] AssignedVars[] [2021-04-16 07:40:08,669 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 87.8 percent of original size [2021-04-16 07:40:08,674 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,676 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,679 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,682 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,685 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,686 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,690 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,692 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,693 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 07:40:08,694 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,695 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,699 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,701 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,702 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 07:40:08,705 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,709 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:40:08,709 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 07:40:08,712 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,715 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:40:08,721 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,724 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,727 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,729 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,731 WARN L245 tifierPushTermWalker]: treesize reduction 10, result has 87.8 percent of original size 67 [2021-04-16 07:40:08,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 07:40:08,764 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:40:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:40:08,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:40:08,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:40:08,873 INFO L142 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-04-16 07:40:08,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 07:40:08,902 INFO L142 QuantifierPusher]: treesize reduction 324, result has 29.9 percent of original size [2021-04-16 07:40:08,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-04-16 07:40:08,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:40:08,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:40:08,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:08,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:40:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:40:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:40:09,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:40:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:40:09,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:09,051 INFO L142 QuantifierPusher]: treesize reduction 4, result has 94.0 percent of original size [2021-04-16 07:40:09,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 07:40:09,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-04-16 07:40:09,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:09,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-16 07:40:09,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-04-16 07:40:09,117 INFO L142 QuantifierPusher]: treesize reduction 8, result has 90.6 percent of original size [2021-04-16 07:40:09,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:09,121 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.7 percent of original size [2021-04-16 07:40:09,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-04-16 07:40:09,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-04-16 07:40:09,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:40:09,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417761737] [2021-04-16 07:40:09,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:40:09,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 07:40:09,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197481987] [2021-04-16 07:40:09,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 07:40:09,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:40:09,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 07:40:09,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-04-16 07:40:09,155 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:09,430 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-04-16 07:40:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:40:09,825 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-04-16 07:40:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-16 07:40:09,828 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-16 07:40:09,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:40:09,829 INFO L225 Difference]: With dead ends: 25 [2021-04-16 07:40:09,829 INFO L226 Difference]: Without dead ends: 19 [2021-04-16 07:40:09,829 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 719.5ms TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-04-16 07:40:09,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-04-16 07:40:09,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-04-16 07:40:09,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-04-16 07:40:09,837 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-04-16 07:40:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:40:09,838 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-04-16 07:40:09,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-04-16 07:40:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-16 07:40:09,838 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:40:09,838 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:40:09,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 07:40:09,839 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:40:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:40:09,839 INFO L82 PathProgramCache]: Analyzing trace with hash -263170305, now seen corresponding path program 2 times [2021-04-16 07:40:09,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:40:09,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216107360] [2021-04-16 07:40:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:40:09,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 07:40:09,848 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (not (= |v_main_#t~nondet7_19| 0)) (<= 0 (+ |v_main_#t~nondet7_19| 2147483648)) (< v_main_~i~0_26 v_~SIZE~0_14) (<= |v_main_#t~nondet7_19| 2147483647)) InVars {~SIZE~0=v_~SIZE~0_14, main_~i~0=v_main_~i~0_26, main_#t~nondet7=|v_main_#t~nondet7_19|} OutVars{~SIZE~0=v_~SIZE~0_14, main_~i~0=v_main_~i~0_26, main_#t~nondet7=|v_main_#t~nondet7_19|} AuxVars[] AssignedVars[] [2021-04-16 07:40:09,852 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 88.1 percent of original size [2021-04-16 07:40:09,854 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,855 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,859 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,862 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,863 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 07:40:09,868 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:40:09,871 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,871 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 07:40:09,872 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,876 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,878 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,878 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 07:40:09,881 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,886 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 07:40:09,888 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,890 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,892 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,895 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,898 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,909 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,913 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,915 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,917 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,920 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,922 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,927 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,930 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,931 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 88.1 percent of original size 90 [2021-04-16 07:40:09,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 07:40:09,962 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:40:09,963 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-04-16 07:40:09,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:09,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 07:40:09,965 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:40:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:40:10,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:40:10,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 07:40:10,055 INFO L142 QuantifierPusher]: treesize reduction 18, result has 53.8 percent of original size [2021-04-16 07:40:10,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 07:40:10,071 INFO L142 QuantifierPusher]: treesize reduction 140, result has 8.5 percent of original size [2021-04-16 07:40:10,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 07:40:10,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:40:10,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:40:10,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:40:10,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:40:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:40:10,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 07:40:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:40:10,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:10,149 INFO L142 QuantifierPusher]: treesize reduction 6, result has 92.4 percent of original size [2021-04-16 07:40:10,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 07:40:10,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 07:40:10,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:10,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-16 07:40:10,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-04-16 07:40:10,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:10,240 INFO L142 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-04-16 07:40:10,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-04-16 07:40:10,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-04-16 07:40:10,281 INFO L142 QuantifierPusher]: treesize reduction 5, result has 95.3 percent of original size [2021-04-16 07:40:10,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:10,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-04-16 07:40:10,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-04-16 07:40:10,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:10,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 07:40:10,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:40:10,350 INFO L142 QuantifierPusher]: treesize reduction 4, result has 95.7 percent of original size [2021-04-16 07:40:10,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-04-16 07:40:10,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-04-16 07:40:10,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:40:10,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:40:10,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216107360] [2021-04-16 07:40:10,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:40:10,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-04-16 07:40:10,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518221076] [2021-04-16 07:40:10,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 07:40:10,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:40:10,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 07:40:10,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-04-16 07:40:10,435 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:40:11,553 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-04-16 07:40:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-16 07:40:11,554 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-04-16 07:40:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:40:11,554 INFO L225 Difference]: With dead ends: 23 [2021-04-16 07:40:11,554 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 07:40:11,555 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1117.0ms TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2021-04-16 07:40:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 07:40:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 07:40:11,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-16 07:40:11,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 07:40:11,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-04-16 07:40:11,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:40:11,556 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 07:40:11,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:40:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 07:40:11,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 07:40:11,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-16 07:40:11,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 07:40:12,117 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 7) no Hoare annotation was computed. [2021-04-16 07:40:12,117 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 7) no Hoare annotation was computed. [2021-04-16 07:40:12,117 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 7) no Hoare annotation was computed. [2021-04-16 07:40:12,117 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (<= 50000001 ~SIZE~0) [2021-04-16 07:40:12,118 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-04-16 07:40:12,118 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (<= 50000001 ~SIZE~0) [2021-04-16 07:40:12,118 INFO L194 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (<= 50000001 ~SIZE~0) [2021-04-16 07:40:12,118 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (<= 50000001 ~SIZE~0) [2021-04-16 07:40:12,118 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 07:40:12,118 INFO L194 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (<= 50000001 ~SIZE~0) [2021-04-16 07:40:12,118 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2021-04-16 07:40:12,118 INFO L198 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2021-04-16 07:40:12,118 INFO L198 CegarLoopUtils]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2021-04-16 07:40:12,118 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2021-04-16 07:40:12,118 INFO L194 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (or (not (<= 50000001 ~SIZE~0)) (let ((.cse0 (div main_~i~0 4))) (and (<= main_~i~0 (* 4 .cse0)) (<= 0 main_~i~0) (= main_~j~0 .cse0)))) [2021-04-16 07:40:12,118 INFO L201 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: true [2021-04-16 07:40:12,118 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2021-04-16 07:40:12,118 INFO L194 CegarLoopUtils]: At program point L25(lines 25 28) the Hoare annotation is: (or (and (<= main_~i~0 (* 4 (div main_~i~0 4))) (<= 0 main_~i~0)) (not (<= 50000001 ~SIZE~0))) [2021-04-16 07:40:12,118 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 20 34) the Hoare annotation is: true [2021-04-16 07:40:12,118 INFO L194 CegarLoopUtils]: At program point L25-2(lines 23 30) the Hoare annotation is: (or (and (<= main_~i~0 (* 4 (div main_~i~0 4))) (<= 0 main_~i~0)) (not (<= 50000001 ~SIZE~0))) [2021-04-16 07:40:12,118 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 30) the Hoare annotation is: (or (and (<= main_~i~0 (* 4 (div main_~i~0 4))) (<= 0 main_~i~0)) (not (<= 50000001 ~SIZE~0))) [2021-04-16 07:40:12,119 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 20 34) the Hoare annotation is: true [2021-04-16 07:40:12,119 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 12 17) the Hoare annotation is: true [2021-04-16 07:40:12,119 INFO L194 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= 50000001 ~SIZE~0))) [2021-04-16 07:40:12,119 INFO L194 CegarLoopUtils]: At program point L13(lines 13 15) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= 50000001 ~SIZE~0)) (not (= __VERIFIER_assert_~cond 0))) [2021-04-16 07:40:12,119 INFO L201 CegarLoopUtils]: At program point L13-2(lines 12 17) the Hoare annotation is: true [2021-04-16 07:40:12,119 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 12 17) the Hoare annotation is: true [2021-04-16 07:40:12,119 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= 50000001 ~SIZE~0))) [2021-04-16 07:40:12,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 07:40:12 BoogieIcfgContainer [2021-04-16 07:40:12,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 07:40:12,134 INFO L168 Benchmark]: Toolchain (without parser) took 6815.60 ms. Allocated memory was 180.4 MB in the beginning and 227.5 MB in the end (delta: 47.2 MB). Free memory was 146.8 MB in the beginning and 157.5 MB in the end (delta: -10.7 MB). Peak memory consumption was 115.7 MB. Max. memory is 8.0 GB. [2021-04-16 07:40:12,134 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 180.4 MB. Free memory was 163.3 MB in the beginning and 163.2 MB in the end (delta: 113.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 07:40:12,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.87 ms. Allocated memory is still 180.4 MB. Free memory was 146.6 MB in the beginning and 137.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 07:40:12,135 INFO L168 Benchmark]: Boogie Preprocessor took 40.15 ms. Allocated memory is still 180.4 MB. Free memory was 137.2 MB in the beginning and 135.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 07:40:12,135 INFO L168 Benchmark]: RCFGBuilder took 416.26 ms. Allocated memory is still 180.4 MB. Free memory was 135.7 MB in the beginning and 151.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. [2021-04-16 07:40:12,140 INFO L168 Benchmark]: TraceAbstraction took 6160.75 ms. Allocated memory was 180.4 MB in the beginning and 227.5 MB in the end (delta: 47.2 MB). Free memory was 151.4 MB in the beginning and 157.5 MB in the end (delta: -6.1 MB). Peak memory consumption was 120.8 MB. Max. memory is 8.0 GB. [2021-04-16 07:40:12,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 180.4 MB. Free memory was 163.3 MB in the beginning and 163.2 MB in the end (delta: 113.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 190.87 ms. Allocated memory is still 180.4 MB. Free memory was 146.6 MB in the beginning and 137.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.15 ms. Allocated memory is still 180.4 MB. Free memory was 137.2 MB in the beginning and 135.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 416.26 ms. Allocated memory is still 180.4 MB. Free memory was 135.7 MB in the beginning and 151.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6160.75 ms. Allocated memory was 180.4 MB in the beginning and 227.5 MB in the end (delta: 47.2 MB). Free memory was 151.4 MB in the beginning and 157.5 MB in the end (delta: -6.1 MB). Peak memory consumption was 120.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5522.0ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 11.0ms, AutomataDifference: 3159.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 560.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 135 SDslu, 72 SDs, 0 SdLazy, 277 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 630.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3110.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 21 LocationsWithAnnotation, 45 PreInvPairs, 73 NumberOfFragments, 154 HoareAnnotationTreeSize, 45 FomulaSimplifications, 2795 FormulaSimplificationTreeSizeReduction, 174.9ms HoareSimplificationTime, 21 FomulaSimplificationsInter, 2977 FormulaSimplificationTreeSizeReductionInter, 369.0ms 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (i <= 4 * (i / 4) && 0 <= i) || !(50000001 <= SIZE) - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...