/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 00:18:48,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 00:18:48,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 00:18:48,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 00:18:48,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 00:18:48,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 00:18:48,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 00:18:48,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 00:18:48,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 00:18:48,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 00:18:48,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 00:18:48,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 00:18:48,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 00:18:48,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 00:18:48,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 00:18:48,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 00:18:48,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 00:18:48,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 00:18:48,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 00:18:48,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 00:18:48,890 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 [2021-05-06 00:18:48,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 00:18:48,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 00:18:48,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 00:18:48,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 00:18:48,928 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 00:18:48,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 00:18:48,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 00:18:48,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 00:18:48,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 00:18:48,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 00:18:48,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 00:18:48,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 00:18:48,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 00:18:48,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 00:18:48,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 00:18:48,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 00:18:48,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 00:18:48,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 00:18:48,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 00:18:48,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 00:18:48,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 00:18:48,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 00:18:48,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 00:18:48,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 00:18:48,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 00:18:48,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 00:18:48,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 00:18:48,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 00:18:48,932 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 00:18:49,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 00:18:49,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 00:18:49,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 00:18:49,251 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 00:18:49,252 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 00:18:49,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-05-06 00:18:49,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43b089db/3eabb122f2f04f7585c75c47b15aba8c/FLAG62193fb22 [2021-05-06 00:18:49,807 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 00:18:49,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-05-06 00:18:49,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43b089db/3eabb122f2f04f7585c75c47b15aba8c/FLAG62193fb22 [2021-05-06 00:18:50,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43b089db/3eabb122f2f04f7585c75c47b15aba8c [2021-05-06 00:18:50,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 00:18:50,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 00:18:50,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 00:18:50,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 00:18:50,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 00:18:50,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:18:50" (1/1) ... [2021-05-06 00:18:50,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372b33e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50, skipping insertion in model container [2021-05-06 00:18:50,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:18:50" (1/1) ... [2021-05-06 00:18:50,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 00:18:50,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 00:18:50,550 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2021-05-06 00:18:50,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 00:18:50,564 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 00:18:50,618 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2021-05-06 00:18:50,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 00:18:50,644 INFO L208 MainTranslator]: Completed translation [2021-05-06 00:18:50,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50 WrapperNode [2021-05-06 00:18:50,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 00:18:50,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 00:18:50,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 00:18:50,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 00:18:50,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50" (1/1) ... [2021-05-06 00:18:50,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50" (1/1) ... [2021-05-06 00:18:50,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50" (1/1) ... [2021-05-06 00:18:50,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50" (1/1) ... [2021-05-06 00:18:50,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50" (1/1) ... [2021-05-06 00:18:50,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50" (1/1) ... [2021-05-06 00:18:50,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50" (1/1) ... [2021-05-06 00:18:50,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 00:18:50,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 00:18:50,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 00:18:50,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 00:18:50,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50" (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 [2021-05-06 00:18:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 00:18:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 00:18:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 00:18:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 00:18:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 00:18:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 00:18:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 00:18:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 00:18:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-05-06 00:18:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-06 00:18:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 00:18:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 00:18:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 00:18:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-06 00:18:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 00:18:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 00:18:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 00:18:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 00:18:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 00:18:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-06 00:18:51,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 00:18:51,545 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 00:18:51,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:18:51 BoogieIcfgContainer [2021-05-06 00:18:51,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 00:18:51,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 00:18:51,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 00:18:51,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 00:18:51,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 12:18:50" (1/3) ... [2021-05-06 00:18:51,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a59831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:18:51, skipping insertion in model container [2021-05-06 00:18:51,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:18:50" (2/3) ... [2021-05-06 00:18:51,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a59831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:18:51, skipping insertion in model container [2021-05-06 00:18:51,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:18:51" (3/3) ... [2021-05-06 00:18:51,553 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2021-05-06 00:18:51,558 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 00:18:51,562 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 00:18:51,575 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 00:18:51,594 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 00:18:51,594 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 00:18:51,594 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 00:18:51,594 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 00:18:51,594 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 00:18:51,595 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 00:18:51,595 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 00:18:51,595 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 00:18:51,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 00:18:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 00:18:51,613 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:18:51,613 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:18:51,614 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:18:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:18:51,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2001183330, now seen corresponding path program 1 times [2021-05-06 00:18:51,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:18:51,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264088156] [2021-05-06 00:18:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:18:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:52,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:18:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:52,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:18:52,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264088156] [2021-05-06 00:18:52,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264088156] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 00:18:52,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 00:18:52,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 00:18:52,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621042490] [2021-05-06 00:18:52,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 00:18:52,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:18:52,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 00:18:52,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 00:18:52,121 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:18:52,352 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-05-06 00:18:52,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 00:18:52,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 00:18:52,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:18:52,361 INFO L225 Difference]: With dead ends: 46 [2021-05-06 00:18:52,361 INFO L226 Difference]: Without dead ends: 24 [2021-05-06 00:18:52,363 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 187.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-06 00:18:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-06 00:18:52,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2021-05-06 00:18:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-06 00:18:52,391 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2021-05-06 00:18:52,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:18:52,391 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-06 00:18:52,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-06 00:18:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 00:18:52,392 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:18:52,392 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:18:52,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 00:18:52,393 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:18:52,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:18:52,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2000766256, now seen corresponding path program 1 times [2021-05-06 00:18:52,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:18:52,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483702968] [2021-05-06 00:18:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:18:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:52,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:18:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:52,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:18:52,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483702968] [2021-05-06 00:18:52,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483702968] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 00:18:52,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 00:18:52,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 00:18:52,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892122499] [2021-05-06 00:18:52,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 00:18:52,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:18:52,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 00:18:52,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 00:18:52,572 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:18:52,677 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-05-06 00:18:52,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 00:18:52,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 00:18:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:18:52,679 INFO L225 Difference]: With dead ends: 28 [2021-05-06 00:18:52,679 INFO L226 Difference]: Without dead ends: 26 [2021-05-06 00:18:52,680 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 00:18:52,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-06 00:18:52,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2021-05-06 00:18:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-05-06 00:18:52,688 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2021-05-06 00:18:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:18:52,688 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-05-06 00:18:52,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-05-06 00:18:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-06 00:18:52,690 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:18:52,690 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:18:52,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 00:18:52,690 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:18:52,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:18:52,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1978265494, now seen corresponding path program 1 times [2021-05-06 00:18:52,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:18:52,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316007853] [2021-05-06 00:18:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:18:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:52,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:18:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:52,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:18:52,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316007853] [2021-05-06 00:18:52,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316007853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:52,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063580532] [2021-05-06 00:18:52,901 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 [2021-05-06 00:18:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:53,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 00:18:53,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:18:53,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:53,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063580532] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:53,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:18:53,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-06 00:18:53,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377247802] [2021-05-06 00:18:53,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 00:18:53,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:18:53,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 00:18:53,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-06 00:18:53,269 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:53,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:18:53,493 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-05-06 00:18:53,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 00:18:53,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (3), 2 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 19 [2021-05-06 00:18:53,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:18:53,494 INFO L225 Difference]: With dead ends: 40 [2021-05-06 00:18:53,494 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 00:18:53,495 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 193.1ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-05-06 00:18:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 00:18:53,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-05-06 00:18:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-05-06 00:18:53,505 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2021-05-06 00:18:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:18:53,505 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-05-06 00:18:53,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:53,506 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-05-06 00:18:53,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-06 00:18:53,507 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:18:53,507 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:18:53,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 00:18:53,721 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:18:53,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:18:53,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1594611826, now seen corresponding path program 2 times [2021-05-06 00:18:53,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:18:53,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399005874] [2021-05-06 00:18:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:18:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:53,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:18:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:53,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:18:53,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399005874] [2021-05-06 00:18:53,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399005874] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:53,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154683694] [2021-05-06 00:18:53,867 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 [2021-05-06 00:18:54,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:18:54,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:18:54,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 00:18:54,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:18:54,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:54,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154683694] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:54,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:18:54,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-06 00:18:54,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580429082] [2021-05-06 00:18:54,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 00:18:54,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:18:54,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 00:18:54,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 00:18:54,184 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:54,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:18:54,423 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-05-06 00:18:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 00:18:54,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 2 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 25 [2021-05-06 00:18:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:18:54,426 INFO L225 Difference]: With dead ends: 46 [2021-05-06 00:18:54,426 INFO L226 Difference]: Without dead ends: 36 [2021-05-06 00:18:54,427 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 181.8ms TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-05-06 00:18:54,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-06 00:18:54,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-05-06 00:18:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-05-06 00:18:54,443 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2021-05-06 00:18:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:18:54,443 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-05-06 00:18:54,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-05-06 00:18:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-06 00:18:54,444 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:18:54,444 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:18:54,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:18:54,645 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:18:54,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:18:54,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1841134202, now seen corresponding path program 3 times [2021-05-06 00:18:54,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:18:54,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960770118] [2021-05-06 00:18:54,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:18:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:18:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:54,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:18:54,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960770118] [2021-05-06 00:18:54,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960770118] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:54,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674768749] [2021-05-06 00:18:54,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:18:55,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-06 00:18:55,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:18:55,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 00:18:55,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:18:55,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:55,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,354 INFO L354 Elim1Store]: treesize reduction 9, result has 89.9 percent of original size [2021-05-06 00:18:56,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 40 treesize of output 95 [2021-05-06 00:18:56,367 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-06 00:18:56,405 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 00:18:56,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,434 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-06 00:18:56,434 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:42 [2021-05-06 00:18:56,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-06 00:18:56,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674768749] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:56,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:18:56,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-05-06 00:18:56,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759836107] [2021-05-06 00:18:56,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 00:18:56,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:18:56,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 00:18:56,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-05-06 00:18:56,619 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 00:18:57,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:18:57,763 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-05-06 00:18:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 00:18:57,764 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2021-05-06 00:18:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:18:57,765 INFO L225 Difference]: With dead ends: 52 [2021-05-06 00:18:57,765 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 00:18:57,766 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1139.0ms TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2021-05-06 00:18:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 00:18:57,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 00:18:57,766 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) [2021-05-06 00:18:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 00:18:57,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-05-06 00:18:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:18:57,767 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 00:18:57,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 00:18:57,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 00:18:57,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 00:18:57,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:18:57,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 00:18:58,328 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-05-06 00:18:58,534 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2021-05-06 00:18:58,536 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-05-06 00:18:58,536 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-05-06 00:18:58,536 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-05-06 00:18:58,536 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-06 00:18:58,537 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#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~string8.offset| |old(#t~string8.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= |old(#valid)| |#valid|) (= |#t~string51.base| |old(#t~string51.base)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |#t~string51.offset| |old(#t~string51.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#t~string8.base| |old(#t~string8.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string7.base| |old(#t~string7.base)|)) [2021-05-06 00:18:58,537 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-06 00:18:58,537 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-06 00:18:58,537 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (= ~Id_MCDC_93~0 0) (exists ((|#t~string4.offset| Int) (|#t~string4.base| Int)) (= 48 (select (select |#memory_int| |#t~string4.base|) |#t~string4.offset|)))) [2021-05-06 00:18:58,537 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 00:18:58,537 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-06 00:18:58,537 INFO L198 CegarLoopUtils]: For program point L161(lines 161 224) no Hoare annotation was computed. [2021-05-06 00:18:58,537 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 133 225) no Hoare annotation was computed. [2021-05-06 00:18:58,537 INFO L198 CegarLoopUtils]: For program point L182(lines 182 217) no Hoare annotation was computed. [2021-05-06 00:18:58,537 INFO L198 CegarLoopUtils]: For program point L180(lines 180 222) no Hoare annotation was computed. [2021-05-06 00:18:58,538 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 133 225) no Hoare annotation was computed. [2021-05-06 00:18:58,538 INFO L198 CegarLoopUtils]: For program point L199(lines 199 209) no Hoare annotation was computed. [2021-05-06 00:18:58,538 INFO L198 CegarLoopUtils]: For program point L193(line 193) no Hoare annotation was computed. [2021-05-06 00:18:58,538 INFO L198 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2021-05-06 00:18:58,538 INFO L198 CegarLoopUtils]: For program point L191(lines 191 210) no Hoare annotation was computed. [2021-05-06 00:18:58,538 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 133 225) the Hoare annotation is: (or (and (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) (forall ((.unlet.2 Int) (.unlet.3 Int)) (not (= (select (select |#memory_int| .unlet.3) .unlet.2) 48))) (not (= |old(~Id_MCDC_93~0)| 0))) [2021-05-06 00:18:58,538 INFO L194 CegarLoopUtils]: At program point L216(lines 182 217) the Hoare annotation is: (let ((.cse7 (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|))) (let ((.cse0 (= 24665 (select .cse7 (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 252)))) (.cse1 (= 24665 (select .cse7 (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 228)))) (.cse2 (= |main_~#main__Id_MCDC_119~0.offset| 0)) (.cse3 (= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0)) (.cse4 (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 1)) (.cse5 (= (select .cse7 (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0)) (.cse6 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0))) (or (not (= |old(~Id_MCDC_93~0)| 0)) (forall ((|#t~string4.offset| Int) (|#t~string4.base| Int)) (not (= 48 (select (select |#memory_int| |#t~string4.base|) |#t~string4.offset|)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 2) .cse5 .cse6) (and .cse0 (< (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296) 42) .cse1 .cse2 .cse3 .cse4 (< (mod ~Id_MCDC_93~0 4294967296) 42) .cse5 .cse6)))) [2021-05-06 00:18:58,539 INFO L194 CegarLoopUtils]: At program point L204(lines 167 223) the Hoare annotation is: (let ((.cse7 (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|))) (let ((.cse0 (= 24665 (select .cse7 (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 252)))) (.cse1 (= 24665 (select .cse7 (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 228)))) (.cse2 (= |main_~#main__Id_MCDC_119~0.offset| 0)) (.cse3 (= (select .cse7 (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0)) (.cse4 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0))) (or (and .cse0 (= ~Id_MCDC_93~0 0) .cse1 .cse2 (= main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse3 .cse4) (not (= |old(~Id_MCDC_93~0)| 0)) (and .cse0 .cse1 .cse2 (<= main_~Id_MCDC_89__Id_MCDC_96~0 1) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 2) (<= 1 main_~Id_MCDC_89__Id_MCDC_96~0) .cse3 .cse4) (forall ((|#t~string4.offset| Int) (|#t~string4.base| Int)) (not (= 48 (select (select |#memory_int| |#t~string4.base|) |#t~string4.offset|)))) (let ((.cse6 (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296)) (.cse5 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (and .cse0 (< .cse5 42) (< .cse6 42) .cse1 .cse2 (not (= 492 (* .cse6 12))) (not (= 492 (* .cse5 12))) .cse3 .cse4))))) [2021-05-06 00:18:58,547 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] [2021-05-06 00:18:58,547 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] [2021-05-06 00:18:58,554 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] [2021-05-06 00:18:58,554 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] [2021-05-06 00:18:58,556 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] [2021-05-06 00:18:58,556 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] [2021-05-06 00:18:58,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] [2021-05-06 00:18:58,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] [2021-05-06 00:18:58,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 12:18:58 BoogieIcfgContainer [2021-05-06 00:18:58,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 00:18:58,558 INFO L168 Benchmark]: Toolchain (without parser) took 8236.27 ms. Allocated memory was 183.5 MB in the beginning and 278.9 MB in the end (delta: 95.4 MB). Free memory was 146.8 MB in the beginning and 166.9 MB in the end (delta: -20.1 MB). Peak memory consumption was 76.0 MB. Max. memory is 8.0 GB. [2021-05-06 00:18:58,558 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 183.5 MB. Free memory is still 164.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 00:18:58,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.57 ms. Allocated memory is still 183.5 MB. Free memory was 146.6 MB in the beginning and 159.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. [2021-05-06 00:18:58,559 INFO L168 Benchmark]: Boogie Preprocessor took 91.90 ms. Allocated memory is still 183.5 MB. Free memory was 159.8 MB in the beginning and 156.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-06 00:18:58,559 INFO L168 Benchmark]: RCFGBuilder took 808.79 ms. Allocated memory is still 183.5 MB. Free memory was 156.7 MB in the beginning and 83.3 MB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. [2021-05-06 00:18:58,559 INFO L168 Benchmark]: TraceAbstraction took 7009.68 ms. Allocated memory was 183.5 MB in the beginning and 278.9 MB in the end (delta: 95.4 MB). Free memory was 83.3 MB in the beginning and 166.9 MB in the end (delta: -83.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. [2021-05-06 00:18:58,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 183.5 MB. Free memory is still 164.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 321.57 ms. Allocated memory is still 183.5 MB. Free memory was 146.6 MB in the beginning and 159.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 91.90 ms. Allocated memory is still 183.5 MB. Free memory was 159.8 MB in the beginning and 156.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 808.79 ms. Allocated memory is still 183.5 MB. Free memory was 156.7 MB in the beginning and 83.3 MB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7009.68 ms. Allocated memory was 183.5 MB in the beginning and 278.9 MB in the end (delta: 95.4 MB). Free memory was 83.3 MB in the beginning and 166.9 MB in the end (delta: -83.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 193]: 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 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6401.4ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 10.4ms, AutomataDifference: 1985.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 542.8ms, InitialAbstractionConstructionTime: 10.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 73 SDtfs, 180 SDslu, 177 SDs, 0 SdLazy, 343 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 586.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1765.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 50.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 18 NumberOfFragments, 380 HoareAnnotationTreeSize, 6 FomulaSimplifications, 456 FormulaSimplificationTreeSizeReduction, 36.2ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 633 FormulaSimplificationTreeSizeReductionInter, 498.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 130.9ms SsaConstructionTime, 1385.3ms SatisfiabilityAnalysisTime, 1838.1ms InterpolantComputationTime, 176 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 168 ConstructedInterpolants, 22 QuantifiedInterpolants, 1565 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1457 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 40/108 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: 167]: Loop Invariant [2021-05-06 00:18:58,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] [2021-05-06 00:18:58,563 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] [2021-05-06 00:18:58,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] [2021-05-06 00:18:58,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] Derived loop invariant: (((((((((24665 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 252] && Id_MCDC_93 == 0) && 24665 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 228]) && main__Id_MCDC_119 == 0) && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_89__Id_MCDC_95 == 0) || !(\old(Id_MCDC_93) == 0)) || ((((((((24665 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 252] && 24665 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 228]) && main__Id_MCDC_119 == 0) && Id_MCDC_89__Id_MCDC_96 <= 1) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 2) && 1 <= Id_MCDC_89__Id_MCDC_96) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_89__Id_MCDC_95 == 0)) || (forall #t~string4.offset : int, #t~string4.base : int :: !(48 == unknown-#memory_int-unknown[#t~string4.base][#t~string4.offset]))) || ((((((((24665 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 252] && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && 24665 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 228]) && main__Id_MCDC_119 == 0) && !(492 == (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 * 12)) && !(492 == (Id_MCDC_93 + 4294967295) % 4294967296 * 12)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_89__Id_MCDC_95 == 0) - InvariantResult [Line: 182]: Loop Invariant [2021-05-06 00:18:58,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] [2021-05-06 00:18:58,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] [2021-05-06 00:18:58,565 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.base,QUANTIFIED] [2021-05-06 00:18:58,565 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[#t~string4.offset,QUANTIFIED] Derived loop invariant: ((!(\old(Id_MCDC_93) == 0) || (forall #t~string4.offset : int, #t~string4.base : int :: !(48 == unknown-#memory_int-unknown[#t~string4.base][#t~string4.offset]))) || ((((((((24665 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 252] && 24665 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 228]) && main__Id_MCDC_119 == 0) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96) && Id_MCDC_89____CPAchecker_TMP_1 == 1) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 2) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_89__Id_MCDC_95 == 0)) || ((((((((24665 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 252] && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && 24665 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 228]) && main__Id_MCDC_119 == 0) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96) && Id_MCDC_89____CPAchecker_TMP_1 == 1) && Id_MCDC_93 % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_89__Id_MCDC_95 == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...