/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invariants/odd.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:40:32,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:40:32,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:40:32,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 16:40:33,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:40:33,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:40:33,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:40:33,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:40:33,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:40:33,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:40:33,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:40:33,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:40:33,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:40:33,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:40:33,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:40:33,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:40:33,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:40:33,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:40:33,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:40:33,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:40:33,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:40:33,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:40:33,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:40:33,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:40:33,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:40:33,167 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:40:33,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:40:33,168 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:40:33,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:40:33,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:40:33,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:40:33,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:40:33,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:40:33,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:40:33,170 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:40:33,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:40:33,171 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:40:33,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:40:33,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:40:33,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:40:33,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:40:33,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:40:33,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:40:33,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:40:33,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:40:33,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:40:33,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:40:33,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:40:33,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:40:33,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:40:33,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:40:33,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:40:33,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:40:33,626 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:40:33,627 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:40:33,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/odd.c [2021-02-21 16:40:33,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba1615aa3/9a00d8702af4472f9ade8d80992e86a6/FLAGeca4c7410 [2021-02-21 16:40:34,367 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:40:34,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c [2021-02-21 16:40:34,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba1615aa3/9a00d8702af4472f9ade8d80992e86a6/FLAGeca4c7410 [2021-02-21 16:40:34,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba1615aa3/9a00d8702af4472f9ade8d80992e86a6 [2021-02-21 16:40:34,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:40:34,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:40:34,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:40:34,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:40:34,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:40:34,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:40:34" (1/1) ... [2021-02-21 16:40:34,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdbc3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:34, skipping insertion in model container [2021-02-21 16:40:34,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:40:34" (1/1) ... [2021-02-21 16:40:34,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:40:34,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:40:35,076 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c[350,363] [2021-02-21 16:40:35,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:40:35,099 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:40:35,115 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c[350,363] [2021-02-21 16:40:35,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:40:35,136 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:40:35,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:35 WrapperNode [2021-02-21 16:40:35,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:40:35,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:40:35,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:40:35,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:40:35,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:35" (1/1) ... [2021-02-21 16:40:35,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:35" (1/1) ... [2021-02-21 16:40:35,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:35" (1/1) ... [2021-02-21 16:40:35,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:35" (1/1) ... [2021-02-21 16:40:35,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:35" (1/1) ... [2021-02-21 16:40:35,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:35" (1/1) ... [2021-02-21 16:40:35,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:35" (1/1) ... [2021-02-21 16:40:35,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:40:35,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:40:35,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:40:35,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:40:35,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:40:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:40:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:40:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:40:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:40:35,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:40:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:40:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:40:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:40:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:40:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:40:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:40:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:40:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:40:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:40:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:40:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:40:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:40:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:40:35,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:40:35,544 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 16:40:35,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:40:35 BoogieIcfgContainer [2021-02-21 16:40:35,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:40:35,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:40:35,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:40:35,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:40:35,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:40:34" (1/3) ... [2021-02-21 16:40:35,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8c05d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:40:35, skipping insertion in model container [2021-02-21 16:40:35,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:40:35" (2/3) ... [2021-02-21 16:40:35,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8c05d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:40:35, skipping insertion in model container [2021-02-21 16:40:35,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:40:35" (3/3) ... [2021-02-21 16:40:35,558 INFO L111 eAbstractionObserver]: Analyzing ICFG odd.c [2021-02-21 16:40:35,567 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:40:35,577 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:40:35,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:40:35,710 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:40:35,711 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:40:35,711 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:40:35,711 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:40:35,711 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:40:35,711 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:40:35,712 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:40:35,712 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:40:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-02-21 16:40:35,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 16:40:35,739 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:40:35,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:40:35,740 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:40:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:40:35,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1035305623, now seen corresponding path program 1 times [2021-02-21 16:40:35,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:40:35,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921400908] [2021-02-21 16:40:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:40:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:40:36,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:36,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:40:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:40:36,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:40:36,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921400908] [2021-02-21 16:40:36,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:40:36,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:40:36,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218657992] [2021-02-21 16:40:36,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:40:36,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:40:36,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:40:36,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:40:36,258 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2021-02-21 16:40:36,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:40:36,358 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-02-21 16:40:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:40:36,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-02-21 16:40:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:40:36,368 INFO L225 Difference]: With dead ends: 32 [2021-02-21 16:40:36,369 INFO L226 Difference]: Without dead ends: 13 [2021-02-21 16:40:36,374 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 [2021-02-21 16:40:36,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-02-21 16:40:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-02-21 16:40:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-02-21 16:40:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-02-21 16:40:36,422 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-02-21 16:40:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:40:36,422 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-02-21 16:40:36,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:40:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-02-21 16:40:36,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-02-21 16:40:36,425 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:40:36,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:40:36,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:40:36,426 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:40:36,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:40:36,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2042096758, now seen corresponding path program 1 times [2021-02-21 16:40:36,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:40:36,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210954099] [2021-02-21 16:40:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:40:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:40:36,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:36,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:40:36,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:36,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:36,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:40:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:40:36,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:40:36,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210954099] [2021-02-21 16:40:36,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:40:36,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:40:36,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473244807] [2021-02-21 16:40:36,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:40:36,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:40:36,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:40:36,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:40:36,590 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2021-02-21 16:40:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:40:36,777 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-02-21 16:40:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:40:36,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-02-21 16:40:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:40:36,779 INFO L225 Difference]: With dead ends: 20 [2021-02-21 16:40:36,780 INFO L226 Difference]: Without dead ends: 15 [2021-02-21 16:40:36,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-21 16:40:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-02-21 16:40:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-02-21 16:40:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-02-21 16:40:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-02-21 16:40:36,797 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-02-21 16:40:36,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:40:36,798 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-02-21 16:40:36,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:40:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-02-21 16:40:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-21 16:40:36,803 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:40:36,804 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:40:36,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:40:36,804 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:40:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:40:36,805 INFO L82 PathProgramCache]: Analyzing trace with hash 615626395, now seen corresponding path program 1 times [2021-02-21 16:40:36,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:40:36,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870353406] [2021-02-21 16:40:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:40:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:40:36,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:36,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:40:36,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:40:36,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:36,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:36,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:36,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:40:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:40:36,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:36,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:40:37,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870353406] [2021-02-21 16:40:37,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705434122] [2021-02-21 16:40:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:40:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:40:37,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-02-21 16:40:37,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:40:37,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:40:37,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:40:37,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:40:37,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 16:40:37,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:40:37,255 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-21 16:40:37,272 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-21 16:40:37,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:40:37,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:40:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:40:37,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-21 16:40:37,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-02-21 16:40:37,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620847370] [2021-02-21 16:40:37,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 16:40:37,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:40:37,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 16:40:37,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-21 16:40:37,280 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 10 states. [2021-02-21 16:40:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:40:37,544 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-02-21 16:40:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 16:40:37,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2021-02-21 16:40:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:40:37,545 INFO L225 Difference]: With dead ends: 18 [2021-02-21 16:40:37,545 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:40:37,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-02-21 16:40:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:40:37,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:40:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:40:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:40:37,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-02-21 16:40:37,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:40:37,548 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:40:37,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 16:40:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:40:37,548 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:40:37,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-21 16:40:37,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:40:37,968 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 16:40:37,969 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 16:40:37,969 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 16:40:37,969 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:40:37,969 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|)) [2021-02-21 16:40:37,970 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:40:37,970 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:40:37,970 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:40:37,970 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:40:37,970 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:40:37,970 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2021-02-21 16:40:37,970 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2021-02-21 16:40:37,971 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-02-21 16:40:37,971 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2021-02-21 16:40:37,971 INFO L189 CegarLoopUtils]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2021-02-21 16:40:37,971 INFO L185 CegarLoopUtils]: At program point L13-3(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-02-21 16:40:37,971 INFO L185 CegarLoopUtils]: At program point L13-4(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-02-21 16:40:37,971 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-21 16:40:37,971 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2021-02-21 16:40:37,972 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-21 16:40:37,972 INFO L189 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:40:37,972 INFO L189 CegarLoopUtils]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2021-02-21 16:40:37,972 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-02-21 16:40:37,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:40:37 BoogieIcfgContainer [2021-02-21 16:40:37,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:40:37,993 INFO L168 Benchmark]: Toolchain (without parser) took 3228.50 ms. Allocated memory was 159.4 MB in the beginning and 204.5 MB in the end (delta: 45.1 MB). Free memory was 135.3 MB in the beginning and 128.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 52.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:40:37,994 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:40:37,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.82 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 124.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:40:37,995 INFO L168 Benchmark]: Boogie Preprocessor took 37.76 ms. Allocated memory is still 159.4 MB. Free memory was 124.9 MB in the beginning and 123.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:40:37,996 INFO L168 Benchmark]: RCFGBuilder took 370.22 ms. Allocated memory is still 159.4 MB. Free memory was 123.3 MB in the beginning and 110.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:40:37,997 INFO L168 Benchmark]: TraceAbstraction took 2442.84 ms. Allocated memory was 159.4 MB in the beginning and 204.5 MB in the end (delta: 45.1 MB). Free memory was 110.3 MB in the beginning and 128.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:40:37,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 353.82 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 124.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.76 ms. Allocated memory is still 159.4 MB. Free memory was 124.9 MB in the beginning and 123.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 370.22 ms. Allocated memory is still 159.4 MB. Free memory was 123.3 MB in the beginning and 110.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2442.84 ms. Allocated memory was 159.4 MB in the beginning and 204.5 MB in the end (delta: 45.1 MB). Free memory was 110.3 MB in the beginning and 128.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 13]: Loop Invariant Derived loop invariant: 2 * (x / 2) + 1 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 31 SDslu, 45 SDs, 0 SdLazy, 65 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 53 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 308 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 2287 SizeOfPredicates, 1 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...