/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-zilu/benchmark10_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 00:38:58,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 00:38:58,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 00:38:58,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 00:38:58,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 00:38:58,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 00:38:58,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 00:38:58,261 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 [2021-04-16 00:38:58,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 00:38:58,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 00:38:58,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-16 00:38:58,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-16 00:38:58,301 INFO L138 SettingsManager]: * Use SBE=true [2021-04-16 00:38:58,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 00:38:58,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 00:38:58,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 00:38:58,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 00:38:58,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 00:38:58,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 00:38:58,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 00:38:58,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 00:38:58,303 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 00:38:58,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 00:38:58,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 00:38:58,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 00:38:58,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 00:38:58,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 00:38:58,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 00:38:58,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 00:38:58,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 00:38:58,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-16 00:38:58,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-16 00:38:58,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 00:38:58,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-16 00:38:58,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 00:38:58,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-04-16 00:38:58,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 00:38:58,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 00:38:58,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 00:38:58,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 00:38:58,632 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 00:38:58,633 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 00:38:58,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i [2021-04-16 00:38:58,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83153a55f/c00221f242894cdcb4c3befc54b441ea/FLAG0e3c6ca80 [2021-04-16 00:38:59,196 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 00:38:59,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i [2021-04-16 00:38:59,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83153a55f/c00221f242894cdcb4c3befc54b441ea/FLAG0e3c6ca80 [2021-04-16 00:38:59,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83153a55f/c00221f242894cdcb4c3befc54b441ea [2021-04-16 00:38:59,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 00:38:59,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 00:38:59,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 00:38:59,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 00:38:59,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 00:38:59,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 12:38:59" (1/1) ... [2021-04-16 00:38:59,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d86a0a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59, skipping insertion in model container [2021-04-16 00:38:59,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 12:38:59" (1/1) ... [2021-04-16 00:38:59,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 00:38:59,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 00:38:59,816 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-zilu/benchmark10_conjunctive.i[873,886] [2021-04-16 00:38:59,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 00:38:59,835 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 00:38:59,846 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-zilu/benchmark10_conjunctive.i[873,886] [2021-04-16 00:38:59,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 00:38:59,865 INFO L208 MainTranslator]: Completed translation [2021-04-16 00:38:59,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59 WrapperNode [2021-04-16 00:38:59,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 00:38:59,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 00:38:59,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 00:38:59,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 00:38:59,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59" (1/1) ... [2021-04-16 00:38:59,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59" (1/1) ... [2021-04-16 00:38:59,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59" (1/1) ... [2021-04-16 00:38:59,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59" (1/1) ... [2021-04-16 00:38:59,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59" (1/1) ... [2021-04-16 00:38:59,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59" (1/1) ... [2021-04-16 00:38:59,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59" (1/1) ... [2021-04-16 00:38:59,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 00:38:59,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 00:38:59,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 00:38:59,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 00:38:59,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59" (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 [2021-04-16 00:39:00,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 00:39:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 00:39:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 00:39:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 00:39:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 00:39:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 00:39:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 00:39:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 00:39:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 00:39:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 00:39:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 00:39:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-04-16 00:39:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 00:39:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 00:39:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 00:39:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 00:39:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 00:39:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 00:39:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 00:39:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 00:39:00,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 00:39:00,269 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 00:39:00,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 12:39:00 BoogieIcfgContainer [2021-04-16 00:39:00,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 00:39:00,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 00:39:00,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 00:39:00,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 00:39:00,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 12:38:59" (1/3) ... [2021-04-16 00:39:00,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bef610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 12:39:00, skipping insertion in model container [2021-04-16 00:39:00,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:38:59" (2/3) ... [2021-04-16 00:39:00,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bef610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 12:39:00, skipping insertion in model container [2021-04-16 00:39:00,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 12:39:00" (3/3) ... [2021-04-16 00:39:00,291 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark10_conjunctive.i [2021-04-16 00:39:00,296 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-16 00:39:00,300 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 00:39:00,332 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 00:39:00,363 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 00:39:00,364 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 00:39:00,364 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-16 00:39:00,364 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 00:39:00,364 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 00:39:00,364 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 00:39:00,364 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 00:39:00,364 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 00:39:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 00:39:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 00:39:00,385 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 00:39:00,386 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 00:39:00,386 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 00:39:00,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 00:39:00,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1360020621, now seen corresponding path program 1 times [2021-04-16 00:39:00,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 00:39:00,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551731378] [2021-04-16 00:39:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 00:39:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:00,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:00,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:00,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:00,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:00,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:00,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:00,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 00:39:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:00,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:00,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:39:00,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551731378] [2021-04-16 00:39:00,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 00:39:00,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 00:39:00,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519600688] [2021-04-16 00:39:00,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 00:39:00,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 00:39:00,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 00:39:00,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 00:39:00,673 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:00,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 00:39:00,773 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2021-04-16 00:39:00,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 00:39:00,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-16 00:39:00,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 00:39:00,781 INFO L225 Difference]: With dead ends: 38 [2021-04-16 00:39:00,781 INFO L226 Difference]: Without dead ends: 16 [2021-04-16 00:39:00,783 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-16 00:39:00,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-04-16 00:39:00,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-04-16 00:39:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-04-16 00:39:00,810 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-04-16 00:39:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 00:39:00,810 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-04-16 00:39:00,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:00,811 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-04-16 00:39:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-16 00:39:00,811 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 00:39:00,811 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 00:39:00,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 00:39:00,812 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 00:39:00,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 00:39:00,812 INFO L82 PathProgramCache]: Analyzing trace with hash 824422544, now seen corresponding path program 1 times [2021-04-16 00:39:00,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 00:39:00,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632646206] [2021-04-16 00:39:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 00:39:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:00,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:00,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:00,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:00,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:00,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:00,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:00,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:00,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 00:39:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:00,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:00,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:39:00,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632646206] [2021-04-16 00:39:00,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 00:39:00,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 00:39:00,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188342116] [2021-04-16 00:39:00,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 00:39:00,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 00:39:00,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 00:39:00,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 00:39:00,905 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 00:39:00,978 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-04-16 00:39:00,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 00:39:00,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-04-16 00:39:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 00:39:00,979 INFO L225 Difference]: With dead ends: 20 [2021-04-16 00:39:00,980 INFO L226 Difference]: Without dead ends: 15 [2021-04-16 00:39:00,980 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-04-16 00:39:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-04-16 00:39:00,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-04-16 00:39:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-04-16 00:39:00,985 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-04-16 00:39:00,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 00:39:00,985 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-04-16 00:39:00,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:00,986 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-04-16 00:39:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 00:39:00,986 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 00:39:00,986 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 00:39:00,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 00:39:00,987 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 00:39:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 00:39:00,987 INFO L82 PathProgramCache]: Analyzing trace with hash -181933682, now seen corresponding path program 1 times [2021-04-16 00:39:00,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 00:39:00,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350187319] [2021-04-16 00:39:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 00:39:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:01,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 00:39:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:01,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:39:01,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350187319] [2021-04-16 00:39:01,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969338838] [2021-04-16 00:39:01,045 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 [2021-04-16 00:39:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:01,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-04-16 00:39:01,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 00:39:01,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:01,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:01,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:01,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:01,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:01,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:01,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,184 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-04-16 00:39:01,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:39:01,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-16 00:39:01,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-04-16 00:39:01,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964025309] [2021-04-16 00:39:01,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 00:39:01,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 00:39:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 00:39:01,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 00:39:01,215 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 00:39:01,321 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-04-16 00:39:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 00:39:01,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-16 00:39:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 00:39:01,322 INFO L225 Difference]: With dead ends: 22 [2021-04-16 00:39:01,322 INFO L226 Difference]: Without dead ends: 17 [2021-04-16 00:39:01,322 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 90.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-04-16 00:39:01,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-04-16 00:39:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-04-16 00:39:01,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-04-16 00:39:01,326 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2021-04-16 00:39:01,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 00:39:01,327 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-04-16 00:39:01,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:01,327 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-04-16 00:39:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-16 00:39:01,327 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 00:39:01,327 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 00:39:01,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-04-16 00:39:01,537 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 00:39:01,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 00:39:01,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1911751447, now seen corresponding path program 2 times [2021-04-16 00:39:01,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 00:39:01,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553714586] [2021-04-16 00:39:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 00:39:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:01,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:39:01,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:39:01,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:39:01,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:39:01,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 00:39:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:39:01,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:39:01,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553714586] [2021-04-16 00:39:01,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528107750] [2021-04-16 00:39:01,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 00:39:01,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-16 00:39:01,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-16 00:39:01,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-04-16 00:39:01,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 00:39:01,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:01,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:01,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:01,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:01,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:01,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:01,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:01,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:01,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:01,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:39:01,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 00:39:01,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 00:39:01,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:39:01,799 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-04-16 00:39:01,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:39:01,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:39:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:39:01,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-16 00:39:01,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2021-04-16 00:39:01,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416437221] [2021-04-16 00:39:01,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-16 00:39:01,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 00:39:01,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-16 00:39:01,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-04-16 00:39:01,810 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 00:39:02,133 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-04-16 00:39:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 00:39:02,133 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-04-16 00:39:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 00:39:02,134 INFO L225 Difference]: With dead ends: 22 [2021-04-16 00:39:02,134 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 00:39:02,136 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 333.9ms TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-04-16 00:39:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 00:39:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 00:39:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-16 00:39:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 00:39:02,137 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-04-16 00:39:02,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 00:39:02,137 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 00:39:02,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:39:02,137 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 00:39:02,137 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 00:39:02,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 00:39:02,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 00:39:02,559 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-04-16 00:39:02,559 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-04-16 00:39:02,559 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-04-16 00:39:02,559 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-04-16 00:39:02,559 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-04-16 00:39:02,560 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-04-16 00:39:02,560 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-04-16 00:39:02,560 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-16 00:39:02,560 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 00:39:02,560 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-04-16 00:39:02,560 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 30) the Hoare annotation is: true [2021-04-16 00:39:02,560 INFO L198 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-04-16 00:39:02,560 INFO L198 CegarLoopUtils]: For program point L26(line 26) no Hoare annotation was computed. [2021-04-16 00:39:02,560 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 30) no Hoare annotation was computed. [2021-04-16 00:39:02,560 INFO L198 CegarLoopUtils]: For program point L22(line 22) no Hoare annotation was computed. [2021-04-16 00:39:02,561 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 27) the Hoare annotation is: (let ((.cse0 (<= 1 main_~i~0))) (or (and (= main_~c~0 0) (<= main_~i~0 0) (<= 0 main_~i~0)) (and (<= 1 main_~c~0) .cse0) (and .cse0 (<= main_~i~0 1) (<= 1 (+ main_~i~0 main_~c~0))))) [2021-04-16 00:39:02,561 INFO L194 CegarLoopUtils]: At program point L23-3(lines 23 27) the Hoare annotation is: (and (<= 1 main_~c~0) (<= 1 main_~i~0)) [2021-04-16 00:39:02,561 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 30) no Hoare annotation was computed. [2021-04-16 00:39:02,561 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-04-16 00:39:02,561 INFO L198 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-04-16 00:39:02,561 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-04-16 00:39:02,561 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2021-04-16 00:39:02,561 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2021-04-16 00:39:02,561 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-04-16 00:39:02,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 12:39:02 BoogieIcfgContainer [2021-04-16 00:39:02,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 00:39:02,581 INFO L168 Benchmark]: Toolchain (without parser) took 2898.66 ms. Allocated memory was 178.3 MB in the beginning and 235.9 MB in the end (delta: 57.7 MB). Free memory was 144.3 MB in the beginning and 196.8 MB in the end (delta: -52.5 MB). Peak memory consumption was 86.7 MB. Max. memory is 8.0 GB. [2021-04-16 00:39:02,581 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 178.3 MB. Free memory is still 160.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 00:39:02,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.13 ms. Allocated memory is still 178.3 MB. Free memory was 144.1 MB in the beginning and 134.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 00:39:02,584 INFO L168 Benchmark]: Boogie Preprocessor took 57.57 ms. Allocated memory is still 178.3 MB. Free memory was 134.7 MB in the beginning and 162.2 MB in the end (delta: -27.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. [2021-04-16 00:39:02,584 INFO L168 Benchmark]: RCFGBuilder took 341.16 ms. Allocated memory is still 178.3 MB. Free memory was 162.2 MB in the beginning and 148.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-04-16 00:39:02,585 INFO L168 Benchmark]: TraceAbstraction took 2306.65 ms. Allocated memory was 178.3 MB in the beginning and 235.9 MB in the end (delta: 57.7 MB). Free memory was 148.1 MB in the beginning and 196.8 MB in the end (delta: -48.7 MB). Peak memory consumption was 91.4 MB. Max. memory is 8.0 GB. [2021-04-16 00:39:02,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 178.3 MB. Free memory is still 160.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 184.13 ms. Allocated memory is still 178.3 MB. Free memory was 144.1 MB in the beginning and 134.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.57 ms. Allocated memory is still 178.3 MB. Free memory was 134.7 MB in the beginning and 162.2 MB in the end (delta: -27.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 341.16 ms. Allocated memory is still 178.3 MB. Free memory was 162.2 MB in the beginning and 148.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2306.65 ms. Allocated memory was 178.3 MB in the beginning and 235.9 MB in the end (delta: 57.7 MB). Free memory was 148.1 MB in the beginning and 196.8 MB in the end (delta: -48.7 MB). Peak memory consumption was 91.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1992.0ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 8.7ms, AutomataDifference: 631.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 204.9ms, InitialAbstractionConstructionTime: 13.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 50 SDtfs, 48 SDslu, 71 SDs, 0 SdLazy, 118 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 585.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 66 HoareAnnotationTreeSize, 11 FomulaSimplifications, 99 FormulaSimplificationTreeSizeReduction, 56.1ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 165 FormulaSimplificationTreeSizeReductionInter, 140.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 28.7ms SsaConstructionTime, 105.7ms SatisfiabilityAnalysisTime, 592.1ms InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 227 SizeOfPredicates, 0 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((c == 0 && i <= 0) && 0 <= i) || (1 <= c && 1 <= i)) || ((1 <= i && i <= 1) && 1 <= i + c) RESULT: Ultimate proved your program to be correct! Received shutdown request...