/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 19:03:08,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 19:03:08,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 19:03:08,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 19:03:08,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 19:03:08,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 19:03:08,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 19:03:08,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 19:03:08,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 19:03:08,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 19:03:08,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 19:03:08,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 19:03:08,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 19:03:08,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 19:03:08,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 19:03:08,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 19:03:08,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 19:03:08,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 19:03:08,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 19:03:08,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 19:03:08,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 19:03:08,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 19:03:08,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 19:03:08,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 19:03:08,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 19:03:08,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 19:03:08,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 19:03:08,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 19:03:08,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 19:03:08,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 19:03:08,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 19:03:08,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 19:03:08,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 19:03:08,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 19:03:08,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 19:03:08,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 19:03:08,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 19:03:08,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 19:03:08,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 19:03:08,856 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 19:03:08,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 19:03:08,857 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 19:03:08,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 19:03:08,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 19:03:08,860 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 19:03:08,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 19:03:08,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 19:03:08,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:03:08,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 19:03:08,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 19:03:08,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 19:03:08,861 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 19:03:09,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 19:03:09,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 19:03:09,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 19:03:09,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 19:03:09,380 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 19:03:09,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2021-02-23 19:03:09,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e3ece3c/9d9fcc9554e74f54b0211d603d18cf5b/FLAG319b9394a [2021-02-23 19:03:10,094 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 19:03:10,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2021-02-23 19:03:10,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e3ece3c/9d9fcc9554e74f54b0211d603d18cf5b/FLAG319b9394a [2021-02-23 19:03:10,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e3ece3c/9d9fcc9554e74f54b0211d603d18cf5b [2021-02-23 19:03:10,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 19:03:10,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 19:03:10,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 19:03:10,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 19:03:10,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 19:03:10,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:03:10" (1/1) ... [2021-02-23 19:03:10,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c6521d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10, skipping insertion in model container [2021-02-23 19:03:10,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:03:10" (1/1) ... [2021-02-23 19:03:10,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 19:03:10,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 19:03:10,680 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c[403,416] [2021-02-23 19:03:10,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:03:10,708 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 19:03:10,721 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c[403,416] [2021-02-23 19:03:10,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:03:10,742 INFO L208 MainTranslator]: Completed translation [2021-02-23 19:03:10,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10 WrapperNode [2021-02-23 19:03:10,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 19:03:10,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 19:03:10,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 19:03:10,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 19:03:10,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10" (1/1) ... [2021-02-23 19:03:10,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10" (1/1) ... [2021-02-23 19:03:10,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10" (1/1) ... [2021-02-23 19:03:10,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10" (1/1) ... [2021-02-23 19:03:10,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10" (1/1) ... [2021-02-23 19:03:10,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10" (1/1) ... [2021-02-23 19:03:10,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10" (1/1) ... [2021-02-23 19:03:10,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 19:03:10,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 19:03:10,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 19:03:10,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 19:03:10,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10" (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 19:03:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 19:03:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 19:03:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 19:03:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 19:03:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 19:03:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 19:03:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 19:03:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 19:03:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 19:03:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 19:03:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 19:03:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 19:03:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 19:03:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 19:03:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 19:03:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 19:03:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 19:03:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 19:03:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 19:03:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 19:03:11,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 19:03:11,181 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 19:03:11,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:03:11 BoogieIcfgContainer [2021-02-23 19:03:11,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 19:03:11,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 19:03:11,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 19:03:11,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 19:03:11,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:03:10" (1/3) ... [2021-02-23 19:03:11,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400f5f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:03:11, skipping insertion in model container [2021-02-23 19:03:11,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:03:10" (2/3) ... [2021-02-23 19:03:11,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400f5f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:03:11, skipping insertion in model container [2021-02-23 19:03:11,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:03:11" (3/3) ... [2021-02-23 19:03:11,194 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt2.c [2021-02-23 19:03:11,234 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 19:03:11,240 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 19:03:11,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 19:03:11,348 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 19:03:11,348 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 19:03:11,349 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 19:03:11,349 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 19:03:11,349 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 19:03:11,349 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 19:03:11,349 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 19:03:11,349 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 19:03:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2021-02-23 19:03:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 19:03:11,382 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:03:11,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:03:11,384 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:03:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:03:11,392 INFO L82 PathProgramCache]: Analyzing trace with hash -320789844, now seen corresponding path program 1 times [2021-02-23 19:03:11,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:03:11,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670202060] [2021-02-23 19:03:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:03:11,520 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:03:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:11,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:11,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:11,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:11,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:11,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:03:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:11,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:11,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:11,882 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 19:03:11,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670202060] [2021-02-23 19:03:11,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:03:11,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 19:03:11,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587159399] [2021-02-23 19:03:11,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 19:03:11,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:03:11,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 19:03:11,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 19:03:11,914 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2021-02-23 19:03:12,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:03:12,009 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2021-02-23 19:03:12,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 19:03:12,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-02-23 19:03:12,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:03:12,019 INFO L225 Difference]: With dead ends: 54 [2021-02-23 19:03:12,019 INFO L226 Difference]: Without dead ends: 33 [2021-02-23 19:03:12,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 19:03:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-23 19:03:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-23 19:03:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-23 19:03:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-02-23 19:03:12,073 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2021-02-23 19:03:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:03:12,074 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-02-23 19:03:12,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 19:03:12,074 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-02-23 19:03:12,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 19:03:12,075 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:03:12,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:03:12,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 19:03:12,076 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:03:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:03:12,078 INFO L82 PathProgramCache]: Analyzing trace with hash -332795617, now seen corresponding path program 1 times [2021-02-23 19:03:12,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:03:12,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897223366] [2021-02-23 19:03:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:03:12,082 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:03:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:12,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:12,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:12,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:12,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:12,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:12,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 19:03:12,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:12,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 19:03:12,364 WARN L141 QuantifierPusher]: treesize reduction 20, result has 69.7 percent of original size [2021-02-23 19:03:12,367 WARN L147 QuantifierPusher]: treesize reduction 20, result has 69.7 percent of original size 46 [2021-02-23 19:03:12,413 WARN L141 QuantifierPusher]: treesize reduction 21, result has 80.6 percent of original size [2021-02-23 19:03:12,420 WARN L147 QuantifierPusher]: treesize reduction 21, result has 80.6 percent of original size 87 [2021-02-23 19:03:12,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:12,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:03:12,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:12,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:03:12,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:12,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:03:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:12,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:12,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:12,556 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 19:03:12,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897223366] [2021-02-23 19:03:12,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:03:12,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 19:03:12,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443394416] [2021-02-23 19:03:12,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 19:03:12,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:03:12,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 19:03:12,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 19:03:12,563 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2021-02-23 19:03:12,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:03:12,901 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-02-23 19:03:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 19:03:12,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-23 19:03:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:03:12,903 INFO L225 Difference]: With dead ends: 49 [2021-02-23 19:03:12,904 INFO L226 Difference]: Without dead ends: 36 [2021-02-23 19:03:12,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-02-23 19:03:12,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-23 19:03:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-02-23 19:03:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-23 19:03:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-02-23 19:03:12,917 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 28 [2021-02-23 19:03:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:03:12,918 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-02-23 19:03:12,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 19:03:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-02-23 19:03:12,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-23 19:03:12,919 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:03:12,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:03:12,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 19:03:12,920 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:03:12,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:03:12,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1594262807, now seen corresponding path program 1 times [2021-02-23 19:03:12,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:03:12,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904509428] [2021-02-23 19:03:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:03:13,492 WARN L202 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2021-02-23 19:03:13,509 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:03:13,514 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:03:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:13,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:13,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:13,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:13,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:03:13,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:13,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:13,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:13,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:03:13,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:13,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:03:13,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:13,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 19:03:13,755 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.0 percent of original size [2021-02-23 19:03:13,759 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.0 percent of original size 128 [2021-02-23 19:03:13,848 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.0 percent of original size [2021-02-23 19:03:13,853 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.0 percent of original size 131 [2021-02-23 19:03:13,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:13,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:03:13,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:13,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:03:13,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:13,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:03:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:13,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:13,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:13,987 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 19:03:13,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904509428] [2021-02-23 19:03:13,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:03:13,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 19:03:13,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579337696] [2021-02-23 19:03:13,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 19:03:13,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:03:13,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 19:03:13,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-02-23 19:03:13,991 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 12 states. [2021-02-23 19:03:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:03:14,466 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-02-23 19:03:14,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 19:03:14,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2021-02-23 19:03:14,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:03:14,470 INFO L225 Difference]: With dead ends: 46 [2021-02-23 19:03:14,471 INFO L226 Difference]: Without dead ends: 41 [2021-02-23 19:03:14,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-02-23 19:03:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-23 19:03:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-02-23 19:03:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-23 19:03:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-23 19:03:14,485 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 32 [2021-02-23 19:03:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:03:14,486 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-23 19:03:14,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 19:03:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-23 19:03:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 19:03:14,488 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:03:14,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:03:14,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 19:03:14,488 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:03:14,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:03:14,489 INFO L82 PathProgramCache]: Analyzing trace with hash 688413967, now seen corresponding path program 2 times [2021-02-23 19:03:14,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:03:14,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980558929] [2021-02-23 19:03:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:03:15,057 WARN L202 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2021-02-23 19:03:15,666 WARN L202 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2021-02-23 19:03:15,673 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:03:15,674 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:03:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:15,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:15,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:15,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:15,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:03:15,766 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-23 19:03:15,768 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-23 19:03:15,789 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-23 19:03:15,790 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-23 19:03:15,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:15,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:03:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:15,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:15,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:15,846 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 19:03:15,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980558929] [2021-02-23 19:03:15,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:03:15,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:03:15,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669775061] [2021-02-23 19:03:15,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:03:15,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:03:15,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:03:15,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:03:15,851 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 5 states. [2021-02-23 19:03:16,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:03:16,024 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-02-23 19:03:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 19:03:16,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-23 19:03:16,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:03:16,026 INFO L225 Difference]: With dead ends: 51 [2021-02-23 19:03:16,026 INFO L226 Difference]: Without dead ends: 41 [2021-02-23 19:03:16,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-23 19:03:16,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-23 19:03:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-02-23 19:03:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-23 19:03:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-02-23 19:03:16,040 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2021-02-23 19:03:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:03:16,041 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-02-23 19:03:16,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:03:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-02-23 19:03:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 19:03:16,042 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:03:16,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:03:16,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 19:03:16,043 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:03:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:03:16,043 INFO L82 PathProgramCache]: Analyzing trace with hash -10578577, now seen corresponding path program 1 times [2021-02-23 19:03:16,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:03:16,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297180298] [2021-02-23 19:03:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:03:16,628 WARN L202 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2021-02-23 19:03:17,268 WARN L202 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2021-02-23 19:03:17,897 WARN L202 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2021-02-23 19:03:17,901 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:03:17,904 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:03:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:17,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:17,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:17,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:17,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:03:17,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:17,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 19:03:18,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 19:03:18,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:03:18,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 19:03:18,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-23 19:03:18,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 19:03:18,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 19:03:18,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 19:03:18,154 WARN L141 QuantifierPusher]: treesize reduction 22, result has 83.8 percent of original size [2021-02-23 19:03:18,157 WARN L147 QuantifierPusher]: treesize reduction 22, result has 83.8 percent of original size 114 [2021-02-23 19:03:18,247 WARN L141 QuantifierPusher]: treesize reduction 22, result has 84.3 percent of original size [2021-02-23 19:03:18,249 WARN L147 QuantifierPusher]: treesize reduction 22, result has 84.3 percent of original size 118 [2021-02-23 19:03:18,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:03:18,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:03:18,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:18,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:03:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:18,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:18,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:18,449 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 19:03:18,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297180298] [2021-02-23 19:03:18,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:03:18,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 19:03:18,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252345763] [2021-02-23 19:03:18,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 19:03:18,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:03:18,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 19:03:18,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-02-23 19:03:18,452 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 14 states. [2021-02-23 19:03:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:03:19,113 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2021-02-23 19:03:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 19:03:19,114 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2021-02-23 19:03:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:03:19,115 INFO L225 Difference]: With dead ends: 50 [2021-02-23 19:03:19,115 INFO L226 Difference]: Without dead ends: 45 [2021-02-23 19:03:19,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-02-23 19:03:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-02-23 19:03:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-02-23 19:03:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-23 19:03:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-02-23 19:03:19,129 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 36 [2021-02-23 19:03:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:03:19,130 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-02-23 19:03:19,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 19:03:19,130 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-02-23 19:03:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 19:03:19,131 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:03:19,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:03:19,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 19:03:19,132 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:03:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:03:19,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1011842713, now seen corresponding path program 2 times [2021-02-23 19:03:19,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:03:19,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356695230] [2021-02-23 19:03:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:03:19,727 WARN L202 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2021-02-23 19:03:20,403 WARN L202 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2021-02-23 19:03:21,062 WARN L202 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2021-02-23 19:03:21,725 WARN L202 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2021-02-23 19:03:21,729 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:03:21,730 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:03:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:21,882 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:03:21,883 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:03:21,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:21,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 19:03:21,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:21,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 19:03:21,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:21,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 19:03:21,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:21,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 19:03:21,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:21,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 19:03:21,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:21,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-23 19:03:22,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:22,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 19:03:22,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:22,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 19:03:22,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:22,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 19:03:22,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:22,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 19:03:22,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:22,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 19:03:22,180 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.1 percent of original size [2021-02-23 19:03:22,183 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.1 percent of original size 132 [2021-02-23 19:03:22,284 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.1 percent of original size [2021-02-23 19:03:22,286 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.1 percent of original size 136 [2021-02-23 19:03:22,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:22,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:03:22,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:22,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:03:22,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:22,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:03:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:22,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:22,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:22,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:22,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:22,531 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 19:03:22,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356695230] [2021-02-23 19:03:22,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:03:22,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 19:03:22,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408560535] [2021-02-23 19:03:22,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 19:03:22,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:03:22,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 19:03:22,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-02-23 19:03:22,534 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 20 states. [2021-02-23 19:03:23,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:03:23,830 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2021-02-23 19:03:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 19:03:23,831 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2021-02-23 19:03:23,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:03:23,832 INFO L225 Difference]: With dead ends: 45 [2021-02-23 19:03:23,832 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 19:03:23,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2021-02-23 19:03:23,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 19:03:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 19:03:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 19:03:23,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 19:03:23,835 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-02-23 19:03:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:03:23,835 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 19:03:23,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 19:03:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 19:03:23,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 19:03:23,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 19:03:23,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 19:03:24,352 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2021-02-23 19:03:24,585 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2021-02-23 19:03:25,010 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2021-02-23 19:03:25,168 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2021-02-23 19:03:25,666 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2021-02-23 19:03:25,723 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 19:03:25,723 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 19:03:25,723 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 19:03:25,724 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 19:03:25,724 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 19:03:25,724 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 19:03:25,724 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 19:03:25,724 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 19:03:25,724 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-23 19:03:25,724 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-23 19:03:25,724 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 19:03:25,724 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 19:03:25,725 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 19:03:25,725 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-23 19:03:25,725 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 19:03:25,725 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-23 19:03:25,725 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 19:03:25,725 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 19:03:25,725 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2021-02-23 19:03:25,725 INFO L189 CegarLoopUtils]: For program point L6(line 6) no Hoare annotation was computed. [2021-02-23 19:03:25,725 INFO L189 CegarLoopUtils]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-02-23 19:03:25,725 INFO L189 CegarLoopUtils]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2021-02-23 19:03:25,725 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2021-02-23 19:03:25,726 INFO L192 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: true [2021-02-23 19:03:25,726 INFO L185 CegarLoopUtils]: At program point L25(lines 25 28) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~n~0 4294967296)))) (let ((.cse3 (= main_~j~0 0)) (.cse2 (<= main_~n~0 (+ .cse0 20000001)))) (or (let ((.cse1 (+ main_~i~0 main_~j~0))) (and (<= (+ .cse0 main_~l~0 3) (+ main_~i~0 main_~j~0 main_~n~0)) (<= .cse1 main_~l~0) (<= main_~l~0 .cse1) .cse2)) (not (<= ~SIZE~0 20000001)) (and (<= main_~i~0 main_~l~0) (<= 1 main_~l~0) .cse3 (<= (+ (* 4294967296 (div main_~l~0 4294967296)) 1) main_~i~0) (<= (+ .cse0 main_~l~0 2) (+ main_~i~0 main_~n~0)) (<= (div main_~l~0 2) 0) .cse2) (and (= main_~i~0 0) .cse3 (= main_~l~0 0) .cse2 (<= (+ .cse0 1) main_~n~0)) (not (<= 20000001 ~SIZE~0))))) [2021-02-23 19:03:25,726 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 16 33) the Hoare annotation is: true [2021-02-23 19:03:25,726 INFO L185 CegarLoopUtils]: At program point L25-2(lines 25 28) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~n~0 4294967296))) (.cse6 (+ main_~i~0 main_~j~0)) (.cse5 (+ main_~l~0 1))) (let ((.cse2 (+ main_~i~0 main_~j~0 main_~n~0)) (.cse3 (<= .cse6 .cse5)) (.cse4 (<= .cse5 .cse6)) (.cse1 (<= main_~n~0 (+ .cse0 20000001)))) (or (and (<= (+ .cse0 2) (+ main_~i~0 main_~n~0)) (= main_~j~0 0) (<= (+ (* 4294967296 (div main_~l~0 4294967296)) 1) (+ main_~i~0 main_~l~0)) (= main_~l~0 0) .cse1 (<= main_~i~0 1)) (and (<= (+ .cse0 main_~l~0 4) .cse2) .cse3 .cse4 .cse1) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (and (<= main_~l~0 (+ (* 4294967296 (div (+ main_~i~0 main_~j~0 (- 2)) 4294967296)) 20000001)) (<= (+ .cse0 main_~l~0 3) .cse2) .cse3 .cse4 .cse1)))) [2021-02-23 19:03:25,726 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (and (= main_~i~0 0) (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) [2021-02-23 19:03:25,727 INFO L185 CegarLoopUtils]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse5 (* 4294967296 (div main_~n~0 4294967296))) (.cse3 (+ main_~i~0 main_~j~0))) (let ((.cse0 (<= .cse3 main_~l~0)) (.cse1 (<= main_~l~0 .cse3)) (.cse6 (= main_~j~0 0)) (.cse2 (* 4294967296 (div main_~l~0 4294967296))) (.cse4 (<= main_~n~0 (+ .cse5 20000001)))) (or (and .cse0 .cse1 (<= (+ .cse2 2) .cse3) .cse4) (and (<= (+ .cse5 main_~l~0 3) (+ main_~i~0 main_~j~0 main_~n~0)) .cse0 .cse1 .cse4) (and (= main_~i~0 0) .cse6 (= main_~l~0 0) .cse4) (and (<= 1 main_~l~0) .cse6 (<= (+ main_~i~0 main_~j~0 .cse2) (+ (* 4294967296 (div .cse3 4294967296)) main_~l~0)) (<= (+ .cse2 1) main_~i~0) (<= main_~i~0 (+ .cse2 4294967295)) (<= (div main_~l~0 2) 0) .cse4) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))))) [2021-02-23 19:03:25,727 INFO L185 CegarLoopUtils]: At program point L23-3(lines 23 30) the Hoare annotation is: (or (let ((.cse2 (div (+ main_~i~0 main_~j~0) 4294967296)) (.cse3 (div main_~l~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ (* 4294967296 .cse2) main_~l~0))) (and (< .cse0 (+ main_~i~0 main_~j~0 .cse1 1)) (< .cse2 (+ .cse3 1)) (<= (+ main_~i~0 main_~j~0 .cse1) .cse0)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-23 19:03:25,727 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-23 19:03:25,727 INFO L192 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: true [2021-02-23 19:03:25,727 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-23 19:03:25,727 INFO L192 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: true [2021-02-23 19:03:25,727 INFO L192 CegarLoopUtils]: At program point L17-2(line 17) the Hoare annotation is: true [2021-02-23 19:03:25,728 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 16 33) the Hoare annotation is: true [2021-02-23 19:03:25,728 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 16 33) the Hoare annotation is: true [2021-02-23 19:03:25,728 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~n~0 4294967296)))) (let ((.cse1 (<= main_~n~0 (+ .cse0 20000001)))) (or (and (<= main_~i~0 main_~l~0) (<= main_~l~0 main_~i~0) (<= main_~l~0 (+ (* 4294967296 (div (+ main_~i~0 (- 1)) 4294967296)) 20000001)) (= main_~j~0 0) (<= (+ .cse0 main_~l~0 2) (+ main_~i~0 main_~n~0)) .cse1) (let ((.cse2 (+ main_~i~0 main_~j~0))) (and (<= (+ .cse0 main_~l~0 3) (+ main_~i~0 main_~j~0 main_~n~0)) (<= .cse2 main_~l~0) (<= main_~l~0 .cse2) .cse1)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))))) [2021-02-23 19:03:25,728 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~n~0 4294967296)))) (let ((.cse2 (<= main_~n~0 (+ .cse0 20000001)))) (or (let ((.cse1 (+ main_~i~0 main_~j~0))) (and (<= (+ .cse0 main_~l~0 3) (+ main_~i~0 main_~j~0 main_~n~0)) (<= .cse1 main_~l~0) (<= main_~l~0 .cse1) .cse2)) (not (<= ~SIZE~0 20000001)) (and (= main_~i~0 0) (= main_~j~0 0) (= main_~l~0 0) .cse2 (<= (+ .cse0 1) main_~n~0)) (not (<= 20000001 ~SIZE~0))))) [2021-02-23 19:03:25,728 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (or (and (= main_~i~0 0) (= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-23 19:03:25,729 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001))) (not (<= 20000001 ~SIZE~0))) [2021-02-23 19:03:25,729 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-23 19:03:25,729 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-23 19:03:25,729 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2021-02-23 19:03:25,729 INFO L185 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 19:03:25,729 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 8 13) the Hoare annotation is: true [2021-02-23 19:03:25,730 INFO L185 CegarLoopUtils]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 19:03:25,730 INFO L185 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 19:03:25,730 INFO L192 CegarLoopUtils]: At program point L9-2(lines 8 13) the Hoare annotation is: true [2021-02-23 19:03:25,730 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 19:03:25,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:03:25 BoogieIcfgContainer [2021-02-23 19:03:25,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 19:03:25,754 INFO L168 Benchmark]: Toolchain (without parser) took 15265.34 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 133.8 MB in the beginning and 175.1 MB in the end (delta: -41.3 MB). Peak memory consumption was 127.9 MB. Max. memory is 8.0 GB. [2021-02-23 19:03:25,755 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 19:03:25,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.42 ms. Allocated memory is still 157.3 MB. Free memory was 132.7 MB in the beginning and 123.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 19:03:25,756 INFO L168 Benchmark]: Boogie Preprocessor took 34.30 ms. Allocated memory is still 157.3 MB. Free memory was 123.2 MB in the beginning and 121.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 19:03:25,756 INFO L168 Benchmark]: RCFGBuilder took 404.34 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 106.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 19:03:25,757 INFO L168 Benchmark]: TraceAbstraction took 14567.52 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 106.0 MB in the beginning and 175.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 99.6 MB. Max. memory is 8.0 GB. [2021-02-23 19:03:25,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.42 ms. Allocated memory is still 157.3 MB. Free memory was 132.7 MB in the beginning and 123.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.30 ms. Allocated memory is still 157.3 MB. Free memory was 123.2 MB in the beginning and 121.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 404.34 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 106.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14567.52 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 106.0 MB in the beginning and 175.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 99.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((((i + j <= l && l <= i + j) && 4294967296 * (l / 4294967296) + 2 <= i + j) && n <= 4294967296 * (n / 4294967296) + 20000001) || (((4294967296 * (n / 4294967296) + l + 3 <= i + j + n && i + j <= l) && l <= i + j) && n <= 4294967296 * (n / 4294967296) + 20000001)) || (((i == 0 && j == 0) && l == 0) && n <= 4294967296 * (n / 4294967296) + 20000001)) || ((((((1 <= l && j == 0) && i + j + 4294967296 * (l / 4294967296) <= 4294967296 * ((i + j) / 4294967296) + l) && 4294967296 * (l / 4294967296) + 1 <= i) && i <= 4294967296 * (l / 4294967296) + 4294967295) && l / 2 <= 0) && n <= 4294967296 * (n / 4294967296) + 20000001)) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 8]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.4s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 170 SDtfs, 281 SDslu, 410 SDs, 0 SdLazy, 697 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, 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, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 42 LocationsWithAnnotation, 84 PreInvPairs, 122 NumberOfFragments, 817 HoareAnnotationTreeSize, 84 FomulaSimplifications, 4434 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 42 FomulaSimplificationsInter, 1899 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...