/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/nla-digbench-scaling/fermat1-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 02:43:00,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 02:43:00,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 02:43:00,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 02:43:00,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 02:43:00,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 02:43:00,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 02:43:00,975 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 02:43:01,013 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 02:43:01,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 02:43:01,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 02:43:01,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 02:43:01,016 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 02:43:01,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 02:43:01,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 02:43:01,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 02:43:01,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 02:43:01,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 02:43:01,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 02:43:01,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 02:43:01,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 02:43:01,018 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 02:43:01,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 02:43:01,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 02:43:01,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 02:43:01,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 02:43:01,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 02:43:01,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 02:43:01,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 02:43:01,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 02:43:01,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 02:43:01,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 02:43:01,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 02:43:01,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 02:43:01,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 02:43:01,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 02:43:01,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 02:43:01,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 02:43:01,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 02:43:01,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 02:43:01,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 02:43:01,317 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 02:43:01,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c [2021-05-06 02:43:01,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15740289c/3510a3f70e0740409af5e4a889c6ecb6/FLAG9d11298c9 [2021-05-06 02:43:01,741 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 02:43:01,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c [2021-05-06 02:43:01,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15740289c/3510a3f70e0740409af5e4a889c6ecb6/FLAG9d11298c9 [2021-05-06 02:43:02,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15740289c/3510a3f70e0740409af5e4a889c6ecb6 [2021-05-06 02:43:02,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 02:43:02,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 02:43:02,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 02:43:02,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 02:43:02,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 02:43:02,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 02:43:02" (1/1) ... [2021-05-06 02:43:02,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9061f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02, skipping insertion in model container [2021-05-06 02:43:02,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 02:43:02" (1/1) ... [2021-05-06 02:43:02,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 02:43:02,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 02:43:02,301 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c[535,548] [2021-05-06 02:43:02,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 02:43:02,325 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 02:43:02,342 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c[535,548] [2021-05-06 02:43:02,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 02:43:02,370 INFO L208 MainTranslator]: Completed translation [2021-05-06 02:43:02,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02 WrapperNode [2021-05-06 02:43:02,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 02:43:02,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 02:43:02,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 02:43:02,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 02:43:02,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02" (1/1) ... [2021-05-06 02:43:02,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02" (1/1) ... [2021-05-06 02:43:02,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02" (1/1) ... [2021-05-06 02:43:02,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02" (1/1) ... [2021-05-06 02:43:02,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02" (1/1) ... [2021-05-06 02:43:02,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02" (1/1) ... [2021-05-06 02:43:02,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02" (1/1) ... [2021-05-06 02:43:02,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 02:43:02,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 02:43:02,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 02:43:02,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 02:43:02,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02" (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 02:43:02,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 02:43:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 02:43:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 02:43:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 02:43:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 02:43:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 02:43:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 02:43:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 02:43:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 02:43:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 02:43:02,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 02:43:02,550 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 02:43:02,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 02:43:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 02:43:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 02:43:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 02:43:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 02:43:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 02:43:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 02:43:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 02:43:02,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 02:43:02,798 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-06 02:43:02,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 02:43:02 BoogieIcfgContainer [2021-05-06 02:43:02,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 02:43:02,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 02:43:02,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 02:43:02,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 02:43:02,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 02:43:02" (1/3) ... [2021-05-06 02:43:02,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8aabc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 02:43:02, skipping insertion in model container [2021-05-06 02:43:02,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:43:02" (2/3) ... [2021-05-06 02:43:02,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8aabc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 02:43:02, skipping insertion in model container [2021-05-06 02:43:02,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 02:43:02" (3/3) ... [2021-05-06 02:43:02,826 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound5.c [2021-05-06 02:43:02,831 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 02:43:02,833 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 02:43:02,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 02:43:02,877 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 02:43:02,877 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 02:43:02,877 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 02:43:02,877 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 02:43:02,877 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 02:43:02,877 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 02:43:02,877 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 02:43:02,878 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 02:43:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 02:43:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 02:43:02,896 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:43:02,896 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 02:43:02,896 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:43:02,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:43:02,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1718462925, now seen corresponding path program 1 times [2021-05-06 02:43:02,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:43:02,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268254547] [2021-05-06 02:43:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:43:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:43:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 02:43:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:43:03,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 02:43:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:43:03,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 02:43:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:43:03,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 02:43:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:43:03,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-06 02:43:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:43:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 02:43:03,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:43:03,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268254547] [2021-05-06 02:43:03,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268254547] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 02:43:03,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 02:43:03,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 02:43:03,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163982621] [2021-05-06 02:43:03,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 02:43:03,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:43:03,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 02:43:03,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 02:43:03,109 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 02:43:03,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:43:03,289 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-05-06 02:43:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 02:43:03,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-06 02:43:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:43:03,296 INFO L225 Difference]: With dead ends: 67 [2021-05-06 02:43:03,297 INFO L226 Difference]: Without dead ends: 32 [2021-05-06 02:43:03,300 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 02:43:03,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-06 02:43:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-06 02:43:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 02:43:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-05-06 02:43:03,352 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 33 [2021-05-06 02:43:03,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:43:03,352 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-05-06 02:43:03,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 02:43:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-05-06 02:43:03,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 02:43:03,355 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:43:03,356 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 02:43:03,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 02:43:03,356 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:43:03,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:43:03,358 INFO L82 PathProgramCache]: Analyzing trace with hash 657160210, now seen corresponding path program 1 times [2021-05-06 02:43:03,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:43:03,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6489198] [2021-05-06 02:43:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:43:03,391 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 02:43:03,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106606125] [2021-05-06 02:43:03,396 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 02:43:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:43:03,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 02:43:03,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 02:43:03,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:43:03,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:43:03,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:43:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 02:43:03,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:43:03,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6489198] [2021-05-06 02:43:03,696 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 02:43:03,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106606125] [2021-05-06 02:43:03,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106606125] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 02:43:03,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 02:43:03,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 02:43:03,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762439055] [2021-05-06 02:43:03,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 02:43:03,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:43:03,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 02:43:03,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 02:43:03,699 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-05-06 02:43:04,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:43:04,441 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-05-06 02:43:04,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 02:43:04,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2021-05-06 02:43:04,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:43:04,443 INFO L225 Difference]: With dead ends: 48 [2021-05-06 02:43:04,444 INFO L226 Difference]: Without dead ends: 46 [2021-05-06 02:43:04,444 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 02:43:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-06 02:43:04,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-05-06 02:43:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 02:43:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2021-05-06 02:43:04,457 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 33 [2021-05-06 02:43:04,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:43:04,457 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2021-05-06 02:43:04,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-05-06 02:43:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2021-05-06 02:43:04,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 02:43:04,459 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:43:04,459 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 02:43:04,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 02:43:04,665 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:43:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:43:04,666 INFO L82 PathProgramCache]: Analyzing trace with hash 936002262, now seen corresponding path program 1 times [2021-05-06 02:43:04,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:43:04,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705751841] [2021-05-06 02:43:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:43:04,678 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 02:43:04,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97633089] [2021-05-06 02:43:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 02:43:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:43:04,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 02:43:04,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 02:43:04,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:43:04,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:43:04,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:43:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 02:43:04,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:43:04,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705751841] [2021-05-06 02:43:04,894 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 02:43:04,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97633089] [2021-05-06 02:43:04,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97633089] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 02:43:04,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 02:43:04,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 02:43:04,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765772834] [2021-05-06 02:43:04,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 02:43:04,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:43:04,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 02:43:04,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 02:43:04,897 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-06 02:43:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:43:04,997 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2021-05-06 02:43:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 02:43:04,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2021-05-06 02:43:04,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:43:04,999 INFO L225 Difference]: With dead ends: 45 [2021-05-06 02:43:04,999 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 02:43:05,000 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-05-06 02:43:05,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 02:43:05,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 02:43:05,000 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 02:43:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 02:43:05,000 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-05-06 02:43:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:43:05,001 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 02:43:05,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-06 02:43:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 02:43:05,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 02:43:05,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 02:43:05,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 02:43:05,534 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-05-06 02:43:05,534 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-05-06 02:43:05,534 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-05-06 02:43:05,534 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-06 02:43:05,535 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-06 02:43:05,535 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-06 02:43:05,535 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-06 02:43:05,535 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 02:43:05,535 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 02:43:05,535 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-06 02:43:05,536 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-05-06 02:43:05,536 INFO L198 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-05-06 02:43:05,536 INFO L198 CegarLoopUtils]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-05-06 02:43:05,536 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-05-06 02:43:05,537 INFO L194 CegarLoopUtils]: At program point L35-2(lines 35 55) the Hoare annotation is: (let ((.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* main_~A~0 4)) (.cse3 (* main_~u~0 2)) (.cse0 (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)))) (and (= .cse0 (+ .cse1 .cse2 (* main_~r~0 4) .cse3)) (= (+ .cse1 .cse2 .cse3) .cse0))) [2021-05-06 02:43:05,537 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 59) no Hoare annotation was computed. [2021-05-06 02:43:05,537 INFO L201 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-05-06 02:43:05,537 INFO L198 CegarLoopUtils]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-05-06 02:43:05,537 INFO L198 CegarLoopUtils]: For program point L48-1(lines 35 55) no Hoare annotation was computed. [2021-05-06 02:43:05,538 INFO L194 CegarLoopUtils]: At program point L48-2(lines 35 55) the Hoare annotation is: (= (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)) (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2))) [2021-05-06 02:43:05,538 INFO L194 CegarLoopUtils]: At program point L40-2(lines 40 46) the Hoare annotation is: (= (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)) (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2))) [2021-05-06 02:43:05,538 INFO L194 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (= (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)) (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2))) [2021-05-06 02:43:05,538 INFO L198 CegarLoopUtils]: For program point L36-1(lines 35 55) no Hoare annotation was computed. [2021-05-06 02:43:05,538 INFO L198 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-05-06 02:43:05,538 INFO L198 CegarLoopUtils]: For program point L57(line 57) no Hoare annotation was computed. [2021-05-06 02:43:05,538 INFO L194 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (= (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)) (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2))) [2021-05-06 02:43:05,538 INFO L198 CegarLoopUtils]: For program point L49-1(lines 48 54) no Hoare annotation was computed. [2021-05-06 02:43:05,539 INFO L194 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (= (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)) (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2))) [2021-05-06 02:43:05,539 INFO L198 CegarLoopUtils]: For program point L41-1(lines 40 46) no Hoare annotation was computed. [2021-05-06 02:43:05,539 INFO L201 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-05-06 02:43:05,539 INFO L201 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-05-06 02:43:05,539 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 59) no Hoare annotation was computed. [2021-05-06 02:43:05,540 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 59) the Hoare annotation is: true [2021-05-06 02:43:05,540 INFO L201 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-05-06 02:43:05,540 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-05-06 02:43:05,540 INFO L198 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-05-06 02:43:05,540 INFO L198 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-05-06 02:43:05,540 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-05-06 02:43:05,540 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-05-06 02:43:05,540 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-05-06 02:43:05,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 02:43:05 BoogieIcfgContainer [2021-05-06 02:43:05,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 02:43:05,558 INFO L168 Benchmark]: Toolchain (without parser) took 3379.46 ms. Allocated memory is still 196.1 MB. Free memory was 159.6 MB in the beginning and 102.2 MB in the end (delta: 57.4 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. [2021-05-06 02:43:05,561 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 196.1 MB. Free memory is still 176.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 02:43:05,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.53 ms. Allocated memory is still 196.1 MB. Free memory was 159.4 MB in the beginning and 149.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-06 02:43:05,564 INFO L168 Benchmark]: Boogie Preprocessor took 79.55 ms. Allocated memory is still 196.1 MB. Free memory was 149.5 MB in the beginning and 179.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. [2021-05-06 02:43:05,564 INFO L168 Benchmark]: RCFGBuilder took 354.47 ms. Allocated memory is still 196.1 MB. Free memory was 179.3 MB in the beginning and 163.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 02:43:05,564 INFO L168 Benchmark]: TraceAbstraction took 2736.56 ms. Allocated memory is still 196.1 MB. Free memory was 163.1 MB in the beginning and 102.2 MB in the end (delta: 60.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2021-05-06 02:43:05,565 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 196.1 MB. Free memory is still 176.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 188.53 ms. Allocated memory is still 196.1 MB. Free memory was 159.4 MB in the beginning and 149.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.55 ms. Allocated memory is still 196.1 MB. Free memory was 149.5 MB in the beginning and 179.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 354.47 ms. Allocated memory is still 196.1 MB. Free memory was 179.3 MB in the beginning and 163.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2736.56 ms. Allocated memory is still 196.1 MB. Free memory was 163.1 MB in the beginning and 102.2 MB in the end (delta: 60.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2353.7ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 10.9ms, AutomataDifference: 1052.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 304.9ms, InitialAbstractionConstructionTime: 10.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 95 SDtfs, 47 SDslu, 232 SDs, 0 SdLazy, 123 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 870.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 114.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 52.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 16 LocationsWithAnnotation, 32 PreInvPairs, 46 NumberOfFragments, 185 HoareAnnotationTreeSize, 32 FomulaSimplifications, 448 FormulaSimplificationTreeSizeReduction, 126.7ms HoareSimplificationTime, 16 FomulaSimplificationsInter, 403 FormulaSimplificationTreeSizeReductionInter, 160.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 28.8ms SsaConstructionTime, 116.9ms SatisfiabilityAnalysisTime, 419.4ms InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 235 SizeOfPredicates, 5 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 73/74 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: 40]: Loop Invariant Derived loop invariant: u * u + v * 2 == v * v + A * 4 + r * 4 + u * 2 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: u * u + v * 2 == v * v + A * 4 + r * 4 + u * 2 RESULT: Ultimate proved your program to be correct! Received shutdown request...