/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/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:38:47,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:38:47,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:38:48,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:38:48,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:38:48,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:38:48,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:38:48,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:38:48,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:38:48,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:38:48,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:38:48,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:38:48,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:38:48,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:38:48,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:38:48,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:38:48,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:38:48,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:38:48,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:38:48,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:38:48,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:38:48,109 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:38:48,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:38:48,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:38:48,112 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:38:48,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:38:48,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:38:48,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:38:48,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:38:48,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:38:48,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:38:48,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:38:48,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:38:48,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:38:48,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:38:48,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:38:48,114 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:38:48,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:38:48,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:38:48,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:38:48,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:38:48,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:38:48,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:38:48,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:38:48,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:38:48,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:38:48,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:38:48,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:38:48,546 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:38:48,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2021-02-23 17:38:48,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a32f2ed3/1e326efbb4a94abc95594e18f336499c/FLAG6b18835ad [2021-02-23 17:38:49,223 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:38:49,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c [2021-02-23 17:38:49,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a32f2ed3/1e326efbb4a94abc95594e18f336499c/FLAG6b18835ad [2021-02-23 17:38:49,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a32f2ed3/1e326efbb4a94abc95594e18f336499c [2021-02-23 17:38:49,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:38:49,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:38:49,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:49,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:38:49,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:38:49,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:49" (1/1) ... [2021-02-23 17:38:49,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1beb82f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49, skipping insertion in model container [2021-02-23 17:38:49,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:49" (1/1) ... [2021-02-23 17:38:49,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:38:49,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:38:49,916 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c[1126,1139] [2021-02-23 17:38:49,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:49,931 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:38:49,961 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c[1126,1139] [2021-02-23 17:38:49,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:49,988 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:38:49,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49 WrapperNode [2021-02-23 17:38:49,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:49,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:38:49,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:38:49,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:38:50,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49" (1/1) ... [2021-02-23 17:38:50,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49" (1/1) ... [2021-02-23 17:38:50,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49" (1/1) ... [2021-02-23 17:38:50,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49" (1/1) ... [2021-02-23 17:38:50,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49" (1/1) ... [2021-02-23 17:38:50,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49" (1/1) ... [2021-02-23 17:38:50,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49" (1/1) ... [2021-02-23 17:38:50,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:38:50,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:38:50,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:38:50,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:38:50,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:38:50,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:38:50,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:38:50,187 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:38:50,188 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-02-23 17:38:50,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:38:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:38:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:38:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:38:50,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:38:50,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:38:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-02-23 17:38:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:38:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:38:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:38:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:38:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:38:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:38:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:38:50,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:38:50,501 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:38:50,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:50 BoogieIcfgContainer [2021-02-23 17:38:50,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:38:50,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:38:50,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:38:50,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:38:50,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:38:49" (1/3) ... [2021-02-23 17:38:50,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e626b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:50, skipping insertion in model container [2021-02-23 17:38:50,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:49" (2/3) ... [2021-02-23 17:38:50,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e626b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:50, skipping insertion in model container [2021-02-23 17:38:50,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:50" (3/3) ... [2021-02-23 17:38:50,541 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2021-02-23 17:38:50,557 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:38:50,569 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:38:50,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:38:50,678 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:38:50,680 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:38:50,680 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:38:50,681 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:38:50,681 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:38:50,681 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:38:50,681 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:38:50,681 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:38:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-23 17:38:50,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-23 17:38:50,731 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:50,732 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 17:38:50,733 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:50,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1808746938, now seen corresponding path program 1 times [2021-02-23 17:38:50,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:50,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632268582] [2021-02-23 17:38:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:50,859 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:51,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:51,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:51,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:51,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:38:51,090 WARN L141 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-02-23 17:38:51,091 WARN L147 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size 12 [2021-02-23 17:38:51,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:51,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:51,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:51,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:51,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:51,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-23 17:38:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:51,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:51,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:51,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:51,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:51,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:51,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:51,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:51,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:51,267 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 17:38:51,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632268582] [2021-02-23 17:38:51,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:51,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:38:51,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409943130] [2021-02-23 17:38:51,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:38:51,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:51,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:38:51,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:38:51,298 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 9 states. [2021-02-23 17:38:52,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:52,000 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2021-02-23 17:38:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:38:52,003 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-02-23 17:38:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:52,013 INFO L225 Difference]: With dead ends: 65 [2021-02-23 17:38:52,014 INFO L226 Difference]: Without dead ends: 45 [2021-02-23 17:38:52,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:38:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-02-23 17:38:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-02-23 17:38:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-23 17:38:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-02-23 17:38:52,078 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2021-02-23 17:38:52,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:52,079 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-02-23 17:38:52,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:38:52,079 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-02-23 17:38:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 17:38:52,082 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:52,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:52,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:38:52,083 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:52,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1330986061, now seen corresponding path program 1 times [2021-02-23 17:38:52,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:52,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295860267] [2021-02-23 17:38:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:52,088 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:52,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:52,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:52,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:52,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-23 17:38:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:52,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:52,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:38:52,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 17:38:52,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:52,226 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 17:38:52,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295860267] [2021-02-23 17:38:52,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:52,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 17:38:52,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252424099] [2021-02-23 17:38:52,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 17:38:52,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:52,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 17:38:52,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:38:52,233 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 5 states. [2021-02-23 17:38:52,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:52,445 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-02-23 17:38:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 17:38:52,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2021-02-23 17:38:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:52,455 INFO L225 Difference]: With dead ends: 61 [2021-02-23 17:38:52,455 INFO L226 Difference]: Without dead ends: 47 [2021-02-23 17:38:52,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:38:52,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-23 17:38:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-02-23 17:38:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-23 17:38:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-02-23 17:38:52,475 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 33 [2021-02-23 17:38:52,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:52,475 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-02-23 17:38:52,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 17:38:52,476 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-02-23 17:38:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 17:38:52,478 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:52,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:52,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:38:52,478 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:52,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1283201204, now seen corresponding path program 1 times [2021-02-23 17:38:52,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:52,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003116162] [2021-02-23 17:38:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:52,483 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:52,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:52,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:38:52,547 WARN L141 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-02-23 17:38:52,548 WARN L147 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size 12 [2021-02-23 17:38:52,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:52,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:52,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:52,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-23 17:38:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:52,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:52,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:52,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:38:52,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:38:52,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:38:52,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 17:38:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:52,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:52,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:52,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:52,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:52,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:38:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-23 17:38:52,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003116162] [2021-02-23 17:38:52,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:52,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 17:38:52,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125877979] [2021-02-23 17:38:52,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 17:38:52,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:52,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 17:38:52,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:38:52,841 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 12 states. [2021-02-23 17:38:53,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:53,575 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-02-23 17:38:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 17:38:53,576 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2021-02-23 17:38:53,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:53,578 INFO L225 Difference]: With dead ends: 58 [2021-02-23 17:38:53,578 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 17:38:53,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-02-23 17:38:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 17:38:53,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2021-02-23 17:38:53,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-23 17:38:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-02-23 17:38:53,595 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 42 [2021-02-23 17:38:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:53,595 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-02-23 17:38:53,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 17:38:53,596 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-02-23 17:38:53,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-23 17:38:53,597 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:53,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:53,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:38:53,598 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:53,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:53,599 INFO L82 PathProgramCache]: Analyzing trace with hash 816185936, now seen corresponding path program 1 times [2021-02-23 17:38:53,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:53,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037796642] [2021-02-23 17:38:53,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:53,601 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:53,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:53,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:53,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:53,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:53,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:53,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:53,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:53,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:53,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:53,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-23 17:38:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:53,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:53,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:53,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:53,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:53,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:53,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:38:53,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:53,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:38:53,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-02-23 17:38:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:53,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:53,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 17:38:53,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037796642] [2021-02-23 17:38:53,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:53,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:38:53,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337438529] [2021-02-23 17:38:53,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:38:53,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:53,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:38:53,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:38:53,729 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 7 states. [2021-02-23 17:38:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:53,961 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-02-23 17:38:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:38:53,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2021-02-23 17:38:53,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:53,963 INFO L225 Difference]: With dead ends: 56 [2021-02-23 17:38:53,964 INFO L226 Difference]: Without dead ends: 50 [2021-02-23 17:38:53,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:38:53,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-23 17:38:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-02-23 17:38:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-23 17:38:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-02-23 17:38:53,979 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 43 [2021-02-23 17:38:53,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:53,980 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-02-23 17:38:53,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:38:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-02-23 17:38:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 17:38:53,982 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:53,982 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:53,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:38:53,982 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:53,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2118403698, now seen corresponding path program 1 times [2021-02-23 17:38:53,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:53,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407844208] [2021-02-23 17:38:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:53,985 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:54,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:54,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:54,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:54,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-23 17:38:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:54,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:54,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:54,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-23 17:38:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:54,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:54,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:54,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:38:54,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:38:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-02-23 17:38:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:54,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:54,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-23 17:38:54,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407844208] [2021-02-23 17:38:54,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:54,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:38:54,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680982323] [2021-02-23 17:38:54,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:38:54,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:54,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:38:54,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:38:54,159 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 7 states. [2021-02-23 17:38:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:54,396 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2021-02-23 17:38:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:38:54,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2021-02-23 17:38:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:54,397 INFO L225 Difference]: With dead ends: 57 [2021-02-23 17:38:54,397 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 17:38:54,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:38:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 17:38:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 17:38:54,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 17:38:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 17:38:54,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2021-02-23 17:38:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:54,400 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 17:38:54,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:38:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 17:38:54,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 17:38:54,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:38:54,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 17:38:55,211 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 17 [2021-02-23 17:38:55,712 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 17:38:55,712 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 17:38:55,712 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 17:38:55,713 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 17:38:55,713 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 17:38:55,713 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:38:55,713 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 17:38:55,713 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 17:38:55,713 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 17:38:55,713 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)|) (= |#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 17:38:55,714 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 17:38:55,714 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 17:38:55,714 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:38:55,714 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:38:55,714 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:38:55,714 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 17:38:55,714 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 17:38:55,714 INFO L192 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-02-23 17:38:55,715 INFO L192 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: true [2021-02-23 17:38:55,715 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-23 17:38:55,715 INFO L192 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: true [2021-02-23 17:38:55,715 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 28 47) the Hoare annotation is: true [2021-02-23 17:38:55,715 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 28 47) the Hoare annotation is: true [2021-02-23 17:38:55,715 INFO L185 CegarLoopUtils]: At program point L42(lines 42 46) the Hoare annotation is: (and (<= (+ main_~m~0 main_~n~0) main_~result~0) (< main_~result~0 (+ main_~m~0 main_~n~0 1))) [2021-02-23 17:38:55,715 INFO L192 CegarLoopUtils]: At program point L36(lines 36 40) the Hoare annotation is: true [2021-02-23 17:38:55,716 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) the Hoare annotation is: false [2021-02-23 17:38:55,716 INFO L192 CegarLoopUtils]: At program point L30(lines 30 34) the Hoare annotation is: true [2021-02-23 17:38:55,716 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 28 47) the Hoare annotation is: true [2021-02-23 17:38:55,716 INFO L185 CegarLoopUtils]: At program point L45(line 45) the Hoare annotation is: false [2021-02-23 17:38:55,716 INFO L185 CegarLoopUtils]: At program point L45-1(line 45) the Hoare annotation is: false [2021-02-23 17:38:55,717 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (and (<= (+ main_~m~0 main_~n~0) main_~result~0) (< main_~result~0 (+ main_~m~0 main_~n~0 1))) [2021-02-23 17:38:55,717 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (<= 0 main_~n~0) [2021-02-23 17:38:55,717 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= |main_#t~ret11| .cse0) (<= .cse0 |main_#t~ret11|))) [2021-02-23 17:38:55,717 INFO L192 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: true [2021-02-23 17:38:55,717 INFO L185 CegarLoopUtils]: At program point L41-2(line 41) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= |main_#t~ret11| .cse0) (<= .cse0 |main_#t~ret11|))) [2021-02-23 17:38:55,717 INFO L185 CegarLoopUtils]: At program point L41-3(line 41) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 main_~result~0) (< main_~result~0 (+ main_~m~0 main_~n~0 1)) (<= |main_#t~ret11| .cse0) (<= .cse0 |main_#t~ret11|))) [2021-02-23 17:38:55,718 INFO L192 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: true [2021-02-23 17:38:55,718 INFO L192 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: true [2021-02-23 17:38:55,718 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (and (<= (+ addition_~n 1) 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2021-02-23 17:38:55,718 INFO L185 CegarLoopUtils]: At program point L22(lines 22 24) the Hoare annotation is: (and (<= addition_~n 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (not (= addition_~n 0))) [2021-02-23 17:38:55,718 INFO L185 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: (and (<= (+ addition_~n 1) 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2021-02-23 17:38:55,719 INFO L185 CegarLoopUtils]: At program point additionFINAL(lines 15 25) the Hoare annotation is: (let ((.cse0 (= |addition_#in~m| addition_~m)) (.cse1 (= |addition_#in~n| addition_~n))) (or (and (<= (+ addition_~n 1) 0) .cse0 .cse1) (let ((.cse2 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 .cse1 (<= .cse2 |addition_#res|) (<= |addition_#res| .cse2))))) [2021-02-23 17:38:55,719 INFO L185 CegarLoopUtils]: At program point L23-2(line 23) the Hoare annotation is: (and (<= (+ addition_~n 1) 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2021-02-23 17:38:55,719 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (<= 1 addition_~n)) [2021-02-23 17:38:55,719 INFO L185 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: (and (<= (+ addition_~n 1) 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2021-02-23 17:38:55,719 INFO L185 CegarLoopUtils]: At program point L19(lines 19 21) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (not (= addition_~n 0))) [2021-02-23 17:38:55,719 INFO L185 CegarLoopUtils]: At program point L20-1(line 20) the Hoare annotation is: (let ((.cse0 (+ |addition_#in~n| |addition_#in~m|))) (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (<= |addition_#t~ret7| .cse0) (<= .cse0 |addition_#t~ret7|) (<= 1 addition_~n))) [2021-02-23 17:38:55,720 INFO L185 CegarLoopUtils]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (+ |addition_#in~n| |addition_#in~m|))) (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (<= |addition_#t~ret7| .cse0) (<= .cse0 |addition_#t~ret7|) (<= 1 addition_~n))) [2021-02-23 17:38:55,720 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= |addition_#in~n| 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2021-02-23 17:38:55,720 INFO L185 CegarLoopUtils]: At program point L20-3(line 20) the Hoare annotation is: (let ((.cse0 (+ |addition_#in~n| |addition_#in~m|))) (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (<= |addition_#t~ret7| .cse0) (<= .cse0 |addition_#res|) (<= .cse0 |addition_#t~ret7|) (<= 1 addition_~n) (<= |addition_#res| .cse0))) [2021-02-23 17:38:55,720 INFO L185 CegarLoopUtils]: At program point L16(lines 16 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m)) [2021-02-23 17:38:55,720 INFO L185 CegarLoopUtils]: At program point L15(lines 15 25) the Hoare annotation is: (= |addition_#in~m| addition_~m) [2021-02-23 17:38:55,720 INFO L192 CegarLoopUtils]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2021-02-23 17:38:55,721 INFO L185 CegarLoopUtils]: At program point additionEXIT(lines 15 25) the Hoare annotation is: (let ((.cse0 (= |addition_#in~m| addition_~m)) (.cse1 (= |addition_#in~n| addition_~n))) (or (and (<= (+ addition_~n 1) 0) .cse0 .cse1) (let ((.cse2 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 .cse1 (<= .cse2 |addition_#res|) (<= |addition_#res| .cse2))))) [2021-02-23 17:38:55,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:38:55 BoogieIcfgContainer [2021-02-23 17:38:55,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:38:55,741 INFO L168 Benchmark]: Toolchain (without parser) took 6096.74 ms. Allocated memory was 153.1 MB in the beginning and 225.4 MB in the end (delta: 72.4 MB). Free memory was 128.1 MB in the beginning and 192.3 MB in the end (delta: -64.2 MB). Peak memory consumption was 126.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:55,741 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 153.1 MB. Free memory was 126.0 MB in the beginning and 125.9 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:38:55,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.97 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 117.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:55,743 INFO L168 Benchmark]: Boogie Preprocessor took 57.89 ms. Allocated memory is still 153.1 MB. Free memory was 117.6 MB in the beginning and 116.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:55,744 INFO L168 Benchmark]: RCFGBuilder took 452.00 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 100.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:55,745 INFO L168 Benchmark]: TraceAbstraction took 5233.64 ms. Allocated memory was 153.1 MB in the beginning and 225.4 MB in the end (delta: 72.4 MB). Free memory was 100.0 MB in the beginning and 192.3 MB in the end (delta: -92.3 MB). Peak memory consumption was 99.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:55,748 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 153.1 MB. Free memory was 126.0 MB in the beginning and 125.9 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 324.97 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 117.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.89 ms. Allocated memory is still 153.1 MB. Free memory was 117.6 MB in the beginning and 116.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 452.00 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 100.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5233.64 ms. Allocated memory was 153.1 MB in the beginning and 225.4 MB in the end (delta: 72.4 MB). Free memory was 100.0 MB in the beginning and 192.3 MB in the end (delta: -92.3 MB). Peak memory consumption was 99.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: 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 - ProcedureContractResult [Line: 28]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for addition Derived contract for procedure addition: ((n + 1 <= 0 && \old(m) == m) && \old(n) == n) || (((\old(m) == m && \old(n) == n) && \old(n) + \old(m) <= \result) && \result <= \old(n) + \old(m)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 193 SDtfs, 294 SDslu, 241 SDs, 0 SdLazy, 636 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 51 LocationsWithAnnotation, 83 PreInvPairs, 133 NumberOfFragments, 364 HoareAnnotationTreeSize, 83 FomulaSimplifications, 3946 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 51 FomulaSimplificationsInter, 1504 FormulaSimplificationTreeSizeReductionInter, 0.8s 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...