/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-36cd7be [2021-02-23 14:07:07,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 14:07:07,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 14:07:07,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 14:07:07,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 14:07:07,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 14:07:07,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 14:07:07,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 14:07:07,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 14:07:07,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 14:07:07,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 14:07:07,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 14:07:07,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 14:07:07,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 14:07:07,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 14:07:07,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 14:07:07,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 14:07:07,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 14:07:07,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 14:07:07,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 14:07:07,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 14:07:07,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 14:07:07,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 14:07:07,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 14:07:07,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 14:07:07,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 14:07:07,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 14:07:07,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 14:07:07,559 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 14:07:07,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 14:07:07,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 14:07:07,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 14:07:07,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 14:07:07,615 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 14:07:07,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 14:07:07,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 14:07:07,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 14:07:07,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 14:07:07,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 14:07:07,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 14:07:07,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 14:07:07,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 14:07:07,618 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 14:07:07,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 14:07:07,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 14:07:07,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 14:07:07,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 14:07:07,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 14:07:07,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 14:07:07,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 14:07:07,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 14:07:07,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 14:07:07,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 14:07:07,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 14:07:07,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 14:07:07,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 14:07:07,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 14:07:07,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 14:07:07,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 14:07:08,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 14:07:08,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 14:07:08,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 14:07:08,011 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 14:07:08,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/odd.c [2021-02-23 14:07:08,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626a56ae0/56722a06a4304a8693e67fac30b5a35b/FLAGa5cbe7e58 [2021-02-23 14:07:08,754 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 14:07:08,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c [2021-02-23 14:07:08,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626a56ae0/56722a06a4304a8693e67fac30b5a35b/FLAGa5cbe7e58 [2021-02-23 14:07:09,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626a56ae0/56722a06a4304a8693e67fac30b5a35b [2021-02-23 14:07:09,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 14:07:09,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 14:07:09,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 14:07:09,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 14:07:09,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 14:07:09,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 02:07:09" (1/1) ... [2021-02-23 14:07:09,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0daad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09, skipping insertion in model container [2021-02-23 14:07:09,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 02:07:09" (1/1) ... [2021-02-23 14:07:09,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 14:07:09,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 14:07:09,311 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] [2021-02-23 14:07:09,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 14:07:09,332 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 14:07:09,347 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] [2021-02-23 14:07:09,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 14:07:09,370 INFO L208 MainTranslator]: Completed translation [2021-02-23 14:07:09,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09 WrapperNode [2021-02-23 14:07:09,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 14:07:09,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 14:07:09,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 14:07:09,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 14:07:09,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09" (1/1) ... [2021-02-23 14:07:09,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09" (1/1) ... [2021-02-23 14:07:09,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09" (1/1) ... [2021-02-23 14:07:09,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09" (1/1) ... [2021-02-23 14:07:09,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09" (1/1) ... [2021-02-23 14:07:09,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09" (1/1) ... [2021-02-23 14:07:09,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09" (1/1) ... [2021-02-23 14:07:09,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 14:07:09,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 14:07:09,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 14:07:09,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 14:07:09,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09" (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 14:07:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 14:07:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 14:07:09,512 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 14:07:09,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 14:07:09,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 14:07:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 14:07:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 14:07:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 14:07:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 14:07:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 14:07:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 14:07:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 14:07:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 14:07:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 14:07:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 14:07:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 14:07:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 14:07:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 14:07:09,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 14:07:09,749 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 14:07:09,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 02:07:09 BoogieIcfgContainer [2021-02-23 14:07:09,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 14:07:09,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 14:07:09,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 14:07:09,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 14:07:09,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 02:07:09" (1/3) ... [2021-02-23 14:07:09,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12061307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 02:07:09, skipping insertion in model container [2021-02-23 14:07:09,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 02:07:09" (2/3) ... [2021-02-23 14:07:09,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12061307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 02:07:09, skipping insertion in model container [2021-02-23 14:07:09,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 02:07:09" (3/3) ... [2021-02-23 14:07:09,762 INFO L111 eAbstractionObserver]: Analyzing ICFG odd.c [2021-02-23 14:07:09,770 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 14:07:09,775 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 14:07:09,802 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 14:07:09,835 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 14:07:09,835 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 14:07:09,836 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 14:07:09,836 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 14:07:09,836 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 14:07:09,836 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 14:07:09,837 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 14:07:09,837 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 14:07:09,855 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-02-23 14:07:09,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-23 14:07:09,862 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:07:09,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:07:09,864 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:07:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:07:09,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1035305623, now seen corresponding path program 1 times [2021-02-23 14:07:09,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:07:09,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160460704] [2021-02-23 14:07:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:07:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:07:10,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:10,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:10,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:10,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:10,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:07:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:07:10,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:10,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:10,218 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 14:07:10,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160460704] [2021-02-23 14:07:10,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:07:10,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 14:07:10,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206638138] [2021-02-23 14:07:10,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 14:07:10,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:07:10,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 14:07:10,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 14:07:10,256 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2021-02-23 14:07:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:07:10,358 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-02-23 14:07:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 14:07:10,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-02-23 14:07:10,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:07:10,381 INFO L225 Difference]: With dead ends: 32 [2021-02-23 14:07:10,382 INFO L226 Difference]: Without dead ends: 13 [2021-02-23 14:07:10,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 14:07:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-02-23 14:07:10,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-02-23 14:07:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-02-23 14:07:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-02-23 14:07:10,436 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-02-23 14:07:10,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:07:10,437 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-02-23 14:07:10,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 14:07:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-02-23 14:07:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-02-23 14:07:10,439 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:07:10,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:07:10,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 14:07:10,440 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:07:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:07:10,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2042096758, now seen corresponding path program 1 times [2021-02-23 14:07:10,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:07:10,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530710585] [2021-02-23 14:07:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:07:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:07:10,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:10,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:10,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:10,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 14:07:10,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:10,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:10,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:10,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:10,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:10,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:10,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:07:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:07:10,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:10,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:10,715 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 14:07:10,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530710585] [2021-02-23 14:07:10,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 14:07:10,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 14:07:10,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642441341] [2021-02-23 14:07:10,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 14:07:10,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:07:10,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 14:07:10,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 14:07:10,727 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2021-02-23 14:07:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:07:11,017 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-02-23 14:07:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 14:07:11,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-02-23 14:07:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:07:11,019 INFO L225 Difference]: With dead ends: 20 [2021-02-23 14:07:11,020 INFO L226 Difference]: Without dead ends: 15 [2021-02-23 14:07:11,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 14:07:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-02-23 14:07:11,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-02-23 14:07:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-02-23 14:07:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-02-23 14:07:11,035 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-02-23 14:07:11,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:07:11,037 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-02-23 14:07:11,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 14:07:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-02-23 14:07:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-23 14:07:11,041 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 14:07:11,047 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 14:07:11,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 14:07:11,048 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 14:07:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 14:07:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash 615626395, now seen corresponding path program 1 times [2021-02-23 14:07:11,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 14:07:11,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924989475] [2021-02-23 14:07:11,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 14:07:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:07:11,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 14:07:11,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 14:07:11,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 14:07:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:07:11,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:07:11,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924989475] [2021-02-23 14:07:11,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923799549] [2021-02-23 14:07:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 14:07:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 14:07:11,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-02-23 14:07:11,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-23 14:07:11,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 14:07:11,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 14:07:11,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 14:07:11,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 14:07:11,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 14:07:11,424 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-23 14:07:11,425 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-23 14:07:11,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 14:07:11,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 14:07:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 14:07:11,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-23 14:07:11,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-02-23 14:07:11,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33570795] [2021-02-23 14:07:11,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 14:07:11,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 14:07:11,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 14:07:11,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-23 14:07:11,431 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 10 states. [2021-02-23 14:07:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 14:07:11,599 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-02-23 14:07:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 14:07:11,600 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2021-02-23 14:07:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 14:07:11,600 INFO L225 Difference]: With dead ends: 18 [2021-02-23 14:07:11,600 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 14:07:11,602 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 [2021-02-23 14:07:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 14:07:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 14:07:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 14:07:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 14:07:11,603 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-02-23 14:07:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 14:07:11,603 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 14:07:11,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 14:07:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 14:07:11,603 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 14:07:11,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-23 14:07:11,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 14:07:12,030 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 14:07:12,030 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 14:07:12,030 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 14:07:12,031 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 14:07:12,031 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 14:07:12,031 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 14:07:12,031 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 14:07:12,031 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 14:07:12,031 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 14:07:12,032 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 14:07:12,032 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2021-02-23 14:07:12,032 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2021-02-23 14:07:12,032 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-02-23 14:07:12,032 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2021-02-23 14:07:12,032 INFO L189 CegarLoopUtils]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2021-02-23 14:07:12,032 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) [2021-02-23 14:07:12,032 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) [2021-02-23 14:07:12,033 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-23 14:07:12,033 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2021-02-23 14:07:12,033 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-23 14:07:12,033 INFO L189 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-02-23 14:07:12,033 INFO L189 CegarLoopUtils]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2021-02-23 14:07:12,033 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-02-23 14:07:12,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 02:07:12 BoogieIcfgContainer [2021-02-23 14:07:12,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 14:07:12,050 INFO L168 Benchmark]: Toolchain (without parser) took 2919.92 ms. Allocated memory is still 161.5 MB. Free memory was 137.1 MB in the beginning and 134.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 84.5 MB. Max. memory is 8.0 GB. [2021-02-23 14:07:12,050 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 136.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 14:07:12,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.91 ms. Allocated memory is still 161.5 MB. Free memory was 136.1 MB in the beginning and 127.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 14:07:12,052 INFO L168 Benchmark]: Boogie Preprocessor took 37.77 ms. Allocated memory is still 161.5 MB. Free memory was 126.6 MB in the beginning and 125.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 14:07:12,052 INFO L168 Benchmark]: RCFGBuilder took 340.18 ms. Allocated memory is still 161.5 MB. Free memory was 125.6 MB in the beginning and 112.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 14:07:12,053 INFO L168 Benchmark]: TraceAbstraction took 2295.48 ms. Allocated memory is still 161.5 MB. Free memory was 112.0 MB in the beginning and 134.3 MB in the end (delta: -22.3 MB). Peak memory consumption was 59.3 MB. Max. memory is 8.0 GB. [2021-02-23 14:07:12,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 136.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 227.91 ms. Allocated memory is still 161.5 MB. Free memory was 136.1 MB in the beginning and 127.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.77 ms. Allocated memory is still 161.5 MB. Free memory was 126.6 MB in the beginning and 125.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 340.18 ms. Allocated memory is still 161.5 MB. Free memory was 125.6 MB in the beginning and 112.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2295.48 ms. Allocated memory is still 161.5 MB. Free memory was 112.0 MB in the beginning and 134.3 MB in the end (delta: -22.3 MB). Peak memory consumption was 59.3 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: 1.9s, 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, 0.4s 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...