/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:52:38,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:52:38,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:52:38,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:52:38,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:52:38,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:52:38,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:52:38,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:52:38,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:52:38,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:52:38,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:52:38,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:52:38,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:52:38,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:52:38,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:52:38,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:52:38,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:52:38,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:52:38,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:52:38,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:52:38,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:52:38,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:52:38,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:52:38,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:52:38,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:52:38,851 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:52:38,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:52:38,851 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:52:38,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:52:38,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:52:38,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:52:38,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:52:38,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:52:38,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:52:38,854 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:52:38,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:52:38,854 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:52:38,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:52:38,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:52:38,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:52:38,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:52:38,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:38,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:52:38,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:52:38,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:52:38,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:52:38,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:52:38,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:52:38,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:52:38,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:52:39,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:52:39,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:52:39,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:52:39,273 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:52:39,274 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:52:39,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2021-02-23 13:52:39,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db2e3fd01/fc5ffdd4776a46289856a808f0e487c6/FLAG6d34dd608 [2021-02-23 13:52:39,997 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:52:39,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2021-02-23 13:52:40,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db2e3fd01/fc5ffdd4776a46289856a808f0e487c6/FLAG6d34dd608 [2021-02-23 13:52:40,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db2e3fd01/fc5ffdd4776a46289856a808f0e487c6 [2021-02-23 13:52:40,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:52:40,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:52:40,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:40,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:52:40,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:52:40,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:40" (1/1) ... [2021-02-23 13:52:40,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea3b298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40, skipping insertion in model container [2021-02-23 13:52:40,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:40" (1/1) ... [2021-02-23 13:52:40,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:52:40,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:52:40,587 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/sum01-2.i[849,862] [2021-02-23 13:52:40,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:40,617 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:52:40,636 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/sum01-2.i[849,862] [2021-02-23 13:52:40,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:40,665 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:52:40,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40 WrapperNode [2021-02-23 13:52:40,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:40,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:52:40,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:52:40,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:52:40,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40" (1/1) ... [2021-02-23 13:52:40,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40" (1/1) ... [2021-02-23 13:52:40,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40" (1/1) ... [2021-02-23 13:52:40,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40" (1/1) ... [2021-02-23 13:52:40,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40" (1/1) ... [2021-02-23 13:52:40,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40" (1/1) ... [2021-02-23 13:52:40,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40" (1/1) ... [2021-02-23 13:52:40,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:52:40,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:52:40,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:52:40,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:52:40,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40" (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 [2021-02-23 13:52:40,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:52:40,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:52:40,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:52:40,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:52:40,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:52:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:52:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:52:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 13:52:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 13:52:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:52:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:52:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:52:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:52:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:52:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:52:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:52:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:52:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:52:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:52:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:52:41,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:52:41,115 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 13:52:41,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:41 BoogieIcfgContainer [2021-02-23 13:52:41,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:52:41,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:52:41,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:52:41,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:52:41,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:52:40" (1/3) ... [2021-02-23 13:52:41,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8be456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:41, skipping insertion in model container [2021-02-23 13:52:41,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:40" (2/3) ... [2021-02-23 13:52:41,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8be456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:41, skipping insertion in model container [2021-02-23 13:52:41,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:41" (3/3) ... [2021-02-23 13:52:41,128 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2021-02-23 13:52:41,136 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:52:41,141 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:52:41,165 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:52:41,218 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:52:41,219 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:52:41,219 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:52:41,219 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:52:41,219 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:52:41,220 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:52:41,220 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:52:41,220 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:52:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-02-23 13:52:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-02-23 13:52:41,256 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:41,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:52:41,258 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:41,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:41,325 INFO L82 PathProgramCache]: Analyzing trace with hash -241432906, now seen corresponding path program 1 times [2021-02-23 13:52:41,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:41,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125749517] [2021-02-23 13:52:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:41,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:41,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:41,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:41,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:52:41,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:41,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:41,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:41,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:41,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:41,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:41,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:41,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:41,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:41,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125749517] [2021-02-23 13:52:41,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:41,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:52:41,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173918291] [2021-02-23 13:52:41,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:52:41,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:41,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:52:41,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:52:41,868 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2021-02-23 13:52:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:42,125 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2021-02-23 13:52:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 13:52:42,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-02-23 13:52:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:42,135 INFO L225 Difference]: With dead ends: 39 [2021-02-23 13:52:42,136 INFO L226 Difference]: Without dead ends: 15 [2021-02-23 13:52:42,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 13:52:42,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-02-23 13:52:42,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-02-23 13:52:42,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-02-23 13:52:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-02-23 13:52:42,180 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-02-23 13:52:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:42,181 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-02-23 13:52:42,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:52:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-02-23 13:52:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-23 13:52:42,182 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:42,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:52:42,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:52:42,183 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:42,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1042759188, now seen corresponding path program 1 times [2021-02-23 13:52:42,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:42,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120687081] [2021-02-23 13:52:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:42,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:42,248 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 13:52:42,249 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 13:52:42,262 WARN L141 QuantifierPusher]: treesize reduction 10, result has 76.2 percent of original size [2021-02-23 13:52:42,264 WARN L147 QuantifierPusher]: treesize reduction 10, result has 76.2 percent of original size 32 [2021-02-23 13:52:42,299 WARN L141 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size [2021-02-23 13:52:42,301 WARN L147 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size 21 [2021-02-23 13:52:42,321 WARN L141 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-02-23 13:52:42,322 WARN L147 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size 13 [2021-02-23 13:52:42,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:42,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:42,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:42,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:42,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120687081] [2021-02-23 13:52:42,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223502323] [2021-02-23 13:52:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:52:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:42,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-23 13:52:42,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-23 13:52:42,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:42,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:42,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:42,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:42,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:42,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:42,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:42,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:42,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 13:52:42,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:42,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:42,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:42,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 13:52:42,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:42,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:42,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:42,634 WARN L141 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-02-23 13:52:42,635 WARN L147 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size 13 [2021-02-23 13:52:42,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:42,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:42,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 13:52:42,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 13:52:42,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:42,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:42,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 13:52:42,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 13:52:42,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:42,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 13:52:42,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 13:52:42,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,713 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-23 13:52:42,718 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:42,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 13:52:42,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 13:52:42,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:42,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:42,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:52:42,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:42,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:42,768 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-23 13:52:42,769 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-23 13:52:42,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:42,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:42,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-23 13:52:42,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-02-23 13:52:42,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150085456] [2021-02-23 13:52:42,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 13:52:42,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:42,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 13:52:42,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-02-23 13:52:42,779 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2021-02-23 13:52:43,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:43,124 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-02-23 13:52:43,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 13:52:43,124 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2021-02-23 13:52:43,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:43,125 INFO L225 Difference]: With dead ends: 22 [2021-02-23 13:52:43,126 INFO L226 Difference]: Without dead ends: 17 [2021-02-23 13:52:43,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-02-23 13:52:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-02-23 13:52:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-02-23 13:52:43,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-02-23 13:52:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-02-23 13:52:43,133 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2021-02-23 13:52:43,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:43,133 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-02-23 13:52:43,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 13:52:43,133 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-02-23 13:52:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-23 13:52:43,134 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:43,134 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:52:43,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-23 13:52:43,350 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:43,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:43,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1799219726, now seen corresponding path program 2 times [2021-02-23 13:52:43,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:43,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104446761] [2021-02-23 13:52:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:43,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:43,423 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 13:52:43,424 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 13:52:43,432 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 13:52:43,433 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 13:52:43,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 13:52:43,457 WARN L141 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-02-23 13:52:43,458 WARN L147 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size 19 [2021-02-23 13:52:43,480 WARN L141 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-02-23 13:52:43,483 WARN L147 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size 21 [2021-02-23 13:52:43,508 WARN L141 QuantifierPusher]: treesize reduction 13, result has 50.0 percent of original size [2021-02-23 13:52:43,509 WARN L147 QuantifierPusher]: treesize reduction 13, result has 50.0 percent of original size 13 [2021-02-23 13:52:43,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:43,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:43,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:43,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:43,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104446761] [2021-02-23 13:52:43,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610053440] [2021-02-23 13:52:43,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:52:43,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-23 13:52:43,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-23 13:52:43,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-23 13:52:43,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-23 13:52:43,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:43,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:43,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:43,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:43,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:43,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:43,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:43,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:43,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:43,765 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 13:52:43,767 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 13:52:43,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:43,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:43,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 13:52:43,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:43,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:43,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:43,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 13:52:43,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:43,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:43,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:43,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 13:52:43,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:43,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:43,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:43,867 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-02-23 13:52:43,867 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size 16 [2021-02-23 13:52:43,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:43,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:43,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 13:52:43,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 13:52:43,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:43,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:43,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 13:52:43,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 13:52:43,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:43,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 13:52:43,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 13:52:43,929 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-02-23 13:52:43,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:43,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,937 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-23 13:52:43,939 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:43,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 13:52:43,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 13:52:43,948 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-23 13:52:43,950 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:43,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-23 13:52:43,957 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size 34 [2021-02-23 13:52:43,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:43,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:43,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:52:43,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:43,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:43,993 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-23 13:52:43,994 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-23 13:52:43,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:43,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:43,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-23 13:52:43,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2021-02-23 13:52:43,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810719069] [2021-02-23 13:52:43,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 13:52:43,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:44,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 13:52:44,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-02-23 13:52:44,000 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 18 states. [2021-02-23 13:52:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:44,678 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-02-23 13:52:44,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 13:52:44,678 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 16 [2021-02-23 13:52:44,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:44,679 INFO L225 Difference]: With dead ends: 27 [2021-02-23 13:52:44,679 INFO L226 Difference]: Without dead ends: 21 [2021-02-23 13:52:44,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2021-02-23 13:52:44,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-02-23 13:52:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-02-23 13:52:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-02-23 13:52:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-02-23 13:52:44,688 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2021-02-23 13:52:44,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:44,689 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-02-23 13:52:44,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 13:52:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-02-23 13:52:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-23 13:52:44,690 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:44,690 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:52:44,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:52:44,907 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:44,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:44,908 INFO L82 PathProgramCache]: Analyzing trace with hash 194389806, now seen corresponding path program 3 times [2021-02-23 13:52:44,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:44,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835035521] [2021-02-23 13:52:44,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:44,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:44,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:44,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:44,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:44,969 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 13:52:44,970 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 13:52:44,977 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 13:52:44,977 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 13:52:44,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:44,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 13:52:45,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:52:45,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 13:52:45,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:52:45,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 13:52:45,029 WARN L141 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-02-23 13:52:45,030 WARN L147 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size 19 [2021-02-23 13:52:45,048 WARN L141 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-02-23 13:52:45,049 WARN L147 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size 21 [2021-02-23 13:52:45,066 WARN L141 QuantifierPusher]: treesize reduction 13, result has 50.0 percent of original size [2021-02-23 13:52:45,067 WARN L147 QuantifierPusher]: treesize reduction 13, result has 50.0 percent of original size 13 [2021-02-23 13:52:45,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:45,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:52:45,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:45,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 13:52:45,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835035521] [2021-02-23 13:52:45,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627927282] [2021-02-23 13:52:45,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:52:45,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-02-23 13:52:45,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-23 13:52:45,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core [2021-02-23 13:52:45,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-23 13:52:45,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:45,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:45,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:45,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:45,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:45,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:45,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:45,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:45,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:45,247 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 13:52:45,247 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 13:52:45,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:45,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:45,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 13:52:45,258 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 13:52:45,258 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 13:52:45,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 13:52:45,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 13:52:45,313 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 13:52:45,313 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 13:52:45,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 13:52:45,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 13:52:45,397 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 13:52:45,398 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 13:52:45,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:52:45,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 13:52:45,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:45,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:45,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:45,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 13:52:45,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:45,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:45,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:45,552 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-02-23 13:52:45,553 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size 16 [2021-02-23 13:52:45,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:45,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:45,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 13:52:45,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 13:52:45,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:52:45,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:45,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 13:52:45,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 13:52:45,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:45,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 13:52:45,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 13:52:45,612 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-02-23 13:52:45,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:45,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,619 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-23 13:52:45,621 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:45,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 13:52:45,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 13:52:45,629 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-23 13:52:45,630 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:52:45,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-23 13:52:45,637 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size 34 [2021-02-23 13:52:45,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:45,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:45,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:52:45,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:45,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:45,685 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-23 13:52:45,686 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-23 13:52:45,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:45,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:45,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-23 13:52:45,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 23 [2021-02-23 13:52:45,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081893455] [2021-02-23 13:52:45,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-23 13:52:45,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:45,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-23 13:52:45,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2021-02-23 13:52:45,692 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 23 states. [2021-02-23 13:52:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:46,764 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-02-23 13:52:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 13:52:46,764 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 20 [2021-02-23 13:52:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:46,765 INFO L225 Difference]: With dead ends: 24 [2021-02-23 13:52:46,765 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:52:46,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2021-02-23 13:52:46,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:52:46,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:52:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:52:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:52:46,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-02-23 13:52:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:46,768 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:52:46,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-23 13:52:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:52:46,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:52:46,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:52:46,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:52:47,267 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 13:52:47,267 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 13:52:47,267 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 13:52:47,267 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:52:47,268 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)|)) [2021-02-23 13:52:47,268 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:52:47,268 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:52:47,268 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:52:47,268 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:52:47,269 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:52:47,269 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2021-02-23 13:52:47,269 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 22 29) no Hoare annotation was computed. [2021-02-23 13:52:47,269 INFO L189 CegarLoopUtils]: For program point L24(line 24) no Hoare annotation was computed. [2021-02-23 13:52:47,269 INFO L189 CegarLoopUtils]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2021-02-23 13:52:47,269 INFO L185 CegarLoopUtils]: At program point L25-3(lines 25 27) the Hoare annotation is: (or (let ((.cse1 (+ main_~sn~0 2)) (.cse0 (* 2 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) (and (= main_~sn~0 0) (= main_~i~0 1))) [2021-02-23 13:52:47,270 INFO L185 CegarLoopUtils]: At program point L25-4(lines 25 27) the Hoare annotation is: (or (= main_~sn~0 0) (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1))))) [2021-02-23 13:52:47,270 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 22 29) no Hoare annotation was computed. [2021-02-23 13:52:47,270 INFO L189 CegarLoopUtils]: For program point L17(line 17) no Hoare annotation was computed. [2021-02-23 13:52:47,270 INFO L189 CegarLoopUtils]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-02-23 13:52:47,270 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2021-02-23 13:52:47,270 INFO L189 CegarLoopUtils]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2021-02-23 13:52:47,270 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2021-02-23 13:52:47,271 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-02-23 13:52:47,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:52:47 BoogieIcfgContainer [2021-02-23 13:52:47,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:52:47,290 INFO L168 Benchmark]: Toolchain (without parser) took 6921.43 ms. Allocated memory was 157.3 MB in the beginning and 251.7 MB in the end (delta: 94.4 MB). Free memory was 132.2 MB in the beginning and 197.4 MB in the end (delta: -65.3 MB). Peak memory consumption was 114.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:47,291 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 127.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:52:47,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.93 ms. Allocated memory is still 157.3 MB. Free memory was 131.0 MB in the beginning and 121.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:47,291 INFO L168 Benchmark]: Boogie Preprocessor took 68.34 ms. Allocated memory is still 157.3 MB. Free memory was 121.0 MB in the beginning and 119.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:47,292 INFO L168 Benchmark]: RCFGBuilder took 378.64 ms. Allocated memory is still 157.3 MB. Free memory was 119.5 MB in the beginning and 106.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:47,292 INFO L168 Benchmark]: TraceAbstraction took 6170.38 ms. Allocated memory was 157.3 MB in the beginning and 251.7 MB in the end (delta: 94.4 MB). Free memory was 106.2 MB in the beginning and 197.4 MB in the end (delta: -91.2 MB). Peak memory consumption was 88.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:47,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 127.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.93 ms. Allocated memory is still 157.3 MB. Free memory was 131.0 MB in the beginning and 121.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.34 ms. Allocated memory is still 157.3 MB. Free memory was 121.0 MB in the beginning and 119.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 378.64 ms. Allocated memory is still 157.3 MB. Free memory was 119.5 MB in the beginning and 106.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6170.38 ms. Allocated memory was 157.3 MB in the beginning and 251.7 MB in the end (delta: 94.4 MB). Free memory was 106.2 MB in the beginning and 197.4 MB in the end (delta: -91.2 MB). Peak memory consumption was 88.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: 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: 25]: Loop Invariant Derived loop invariant: ((2 * i <= sn + 2 && sn + 2 <= 2 * i) && sn < 2 * n + 1) || (sn == 0 && i == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 65 SDslu, 169 SDs, 0 SdLazy, 425 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 76 HoareAnnotationTreeSize, 13 FomulaSimplifications, 102 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 517 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 11555 SizeOfPredicates, 6 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 4/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...