/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:43:46,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:43:46,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:43:46,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 18:43:46,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:43:46,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:43:46,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:43:46,181 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 [2020-10-23 18:43:46,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:43:46,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:43:46,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:43:46,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:43:46,246 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:43:46,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:43:46,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:43:46,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:43:46,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:43:46,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:43:46,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:43:46,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:43:46,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:43:46,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:43:46,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:43:46,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:43:46,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:43:46,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:43:46,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:43:46,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:43:46,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:43:46,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:43:46,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:43:46,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:43:46,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:43:46,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:43:46,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:43:46,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:43:46,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:43:46,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:43:46,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:43:46,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:43:46,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:43:46,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:43:46,725 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:43:46,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-10-23 18:43:46,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/116a654d2/4001f85669bc42389566afd47d544da8/FLAG76df0e61d [2020-10-23 18:43:47,582 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:43:47,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-10-23 18:43:47,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/116a654d2/4001f85669bc42389566afd47d544da8/FLAG76df0e61d [2020-10-23 18:43:47,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/116a654d2/4001f85669bc42389566afd47d544da8 [2020-10-23 18:43:47,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:43:47,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:43:47,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:47,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:43:47,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:43:47,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:47" (1/1) ... [2020-10-23 18:43:47,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489b8964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:47, skipping insertion in model container [2020-10-23 18:43:47,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:47" (1/1) ... [2020-10-23 18:43:47,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:43:48,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:43:48,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:48,212 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:43:48,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:48,255 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:43:48,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:48 WrapperNode [2020-10-23 18:43:48,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:48,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:43:48,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:43:48,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:43:48,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:48" (1/1) ... [2020-10-23 18:43:48,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:48" (1/1) ... [2020-10-23 18:43:48,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:48" (1/1) ... [2020-10-23 18:43:48,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:48" (1/1) ... [2020-10-23 18:43:48,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:48" (1/1) ... [2020-10-23 18:43:48,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:48" (1/1) ... [2020-10-23 18:43:48,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:48" (1/1) ... [2020-10-23 18:43:48,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:43:48,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:43:48,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:43:48,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:43:48,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:48" (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 [2020-10-23 18:43:48,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:43:48,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:43:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:43:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:43:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:43:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:43:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:43:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:43:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:43:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:43:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:43:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:43:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:43:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:43:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 18:43:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:43:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:43:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:43:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:43:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:43:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:43:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:43:49,014 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:43:49,015 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 18:43:49,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:49 BoogieIcfgContainer [2020-10-23 18:43:49,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:43:49,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:43:49,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:43:49,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:43:49,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:43:47" (1/3) ... [2020-10-23 18:43:49,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eab52cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:49, skipping insertion in model container [2020-10-23 18:43:49,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:48" (2/3) ... [2020-10-23 18:43:49,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eab52cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:49, skipping insertion in model container [2020-10-23 18:43:49,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:49" (3/3) ... [2020-10-23 18:43:49,033 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2020-10-23 18:43:49,049 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:43:49,056 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:43:49,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:43:49,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:43:49,119 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:43:49,119 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:43:49,119 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:43:49,119 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:43:49,119 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:43:49,119 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:43:49,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:43:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-23 18:43:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:43:49,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:49,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:49,156 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:49,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1062743835, now seen corresponding path program 1 times [2020-10-23 18:43:49,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:49,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634585765] [2020-10-23 18:43:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:49,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:43:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:43:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 18:43:49,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634585765] [2020-10-23 18:43:49,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:49,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:43:49,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78974576] [2020-10-23 18:43:49,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:43:49,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:49,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:43:49,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:43:49,614 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-23 18:43:49,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:49,756 INFO L93 Difference]: Finished difference Result 66 states and 91 transitions. [2020-10-23 18:43:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:43:49,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-23 18:43:49,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:49,769 INFO L225 Difference]: With dead ends: 66 [2020-10-23 18:43:49,769 INFO L226 Difference]: Without dead ends: 30 [2020-10-23 18:43:49,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:43:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-23 18:43:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-23 18:43:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-23 18:43:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-23 18:43:49,824 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2020-10-23 18:43:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:49,824 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-23 18:43:49,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:43:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-23 18:43:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:43:49,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:49,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:49,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:43:49,828 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:49,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:49,829 INFO L82 PathProgramCache]: Analyzing trace with hash -351351529, now seen corresponding path program 1 times [2020-10-23 18:43:49,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:49,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645271292] [2020-10-23 18:43:49,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:49,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:43:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:50,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:43:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:43:50,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645271292] [2020-10-23 18:43:50,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:50,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 18:43:50,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600949456] [2020-10-23 18:43:50,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 18:43:50,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:50,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 18:43:50,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:43:50,050 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 9 states. [2020-10-23 18:43:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:50,427 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-10-23 18:43:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:43:50,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-23 18:43:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:50,430 INFO L225 Difference]: With dead ends: 41 [2020-10-23 18:43:50,430 INFO L226 Difference]: Without dead ends: 37 [2020-10-23 18:43:50,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:43:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-23 18:43:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-10-23 18:43:50,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 18:43:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-23 18:43:50,444 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 24 [2020-10-23 18:43:50,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:50,445 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-23 18:43:50,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 18:43:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-23 18:43:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 18:43:50,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:50,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:50,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:43:50,447 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:50,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:50,447 INFO L82 PathProgramCache]: Analyzing trace with hash -897618950, now seen corresponding path program 1 times [2020-10-23 18:43:50,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:50,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137267301] [2020-10-23 18:43:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:50,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:43:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:50,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:43:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 18:43:50,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137267301] [2020-10-23 18:43:50,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:50,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:43:50,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55117144] [2020-10-23 18:43:50,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:43:50,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:50,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:43:50,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:43:50,552 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 4 states. [2020-10-23 18:43:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:50,669 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-10-23 18:43:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:43:50,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-23 18:43:50,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:50,672 INFO L225 Difference]: With dead ends: 51 [2020-10-23 18:43:50,672 INFO L226 Difference]: Without dead ends: 39 [2020-10-23 18:43:50,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:43:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-23 18:43:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-10-23 18:43:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-23 18:43:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-23 18:43:50,683 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 26 [2020-10-23 18:43:50,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:50,684 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-23 18:43:50,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:43:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-23 18:43:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 18:43:50,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:50,686 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1] [2020-10-23 18:43:50,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:43:50,686 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:50,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:50,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1278041966, now seen corresponding path program 1 times [2020-10-23 18:43:50,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:50,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061409637] [2020-10-23 18:43:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:51,538 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2020-10-23 18:43:51,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:51,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:43:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:51,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:43:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:51,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 18:43:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 18:43:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-23 18:43:51,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061409637] [2020-10-23 18:43:51,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529306505] [2020-10-23 18:43:51,839 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 [2020-10-23 18:43:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:52,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-23 18:43:52,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:55,564 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:55,568 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:55,576 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:55,603 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:55,605 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:55,611 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:55,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:55,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:55,624 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:55,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-10-23 18:43:55,700 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:43:55,714 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-10-23 18:43:55,715 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-23 18:43:55,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:43:55,750 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-23 18:43:55,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:43:55,766 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-23 18:43:55,780 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-23 18:43:55,787 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-23 18:43:55,795 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 14 [2020-10-23 18:43:55,797 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-23 18:43:55,815 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-10-23 18:43:55,816 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-23 18:43:55,938 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2020-10-23 18:43:55,940 INFO L625 ElimStorePlain]: treesize reduction 42, result has 60.7 percent of original size [2020-10-23 18:43:55,956 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:43:55,956 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:609, output treesize:7 [2020-10-23 18:43:56,080 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-23 18:43:56,177 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:56,327 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:56,427 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:43:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 1 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-23 18:43:56,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:43:56,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2020-10-23 18:43:56,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046547199] [2020-10-23 18:43:56,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-23 18:43:56,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:56,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-23 18:43:56,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=379, Unknown=1, NotChecked=0, Total=462 [2020-10-23 18:43:56,542 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 22 states. [2020-10-23 18:44:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:05,655 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-10-23 18:44:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 18:44:05,655 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 39 [2020-10-23 18:44:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:05,657 INFO L225 Difference]: With dead ends: 46 [2020-10-23 18:44:05,657 INFO L226 Difference]: Without dead ends: 42 [2020-10-23 18:44:05,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=143, Invalid=725, Unknown=2, NotChecked=0, Total=870 [2020-10-23 18:44:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-23 18:44:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-23 18:44:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-23 18:44:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-23 18:44:05,667 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 39 [2020-10-23 18:44:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:05,668 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-23 18:44:05,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-23 18:44:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-23 18:44:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-23 18:44:05,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:05,670 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1] [2020-10-23 18:44:05,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:05,876 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:05,877 INFO L82 PathProgramCache]: Analyzing trace with hash -164662083, now seen corresponding path program 1 times [2020-10-23 18:44:05,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:05,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850880576] [2020-10-23 18:44:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:44:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-23 18:44:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 18:44:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 18:44:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 18:44:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-23 18:44:06,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850880576] [2020-10-23 18:44:06,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899364482] [2020-10-23 18:44:06,223 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 [2020-10-23 18:44:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:06,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-23 18:44:06,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 1 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-23 18:44:08,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:08,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2020-10-23 18:44:08,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587714495] [2020-10-23 18:44:08,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:44:08,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:08,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:44:08,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2020-10-23 18:44:08,689 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 10 states. [2020-10-23 18:44:13,141 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-23 18:44:13,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:13,443 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-23 18:44:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:44:13,444 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-23 18:44:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:13,445 INFO L225 Difference]: With dead ends: 49 [2020-10-23 18:44:13,445 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:44:13,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2020-10-23 18:44:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:44:13,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:44:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:44:13,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:44:13,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-10-23 18:44:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:13,447 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:44:13,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:44:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:44:13,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:44:13,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:13,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:44:13,896 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-10-23 18:44:18,319 WARN L193 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-10-23 18:44:18,323 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-23 18:44:18,323 INFO L274 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-10-23 18:44:18,323 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 18) no Hoare annotation was computed. [2020-10-23 18:44:18,324 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 18) the Hoare annotation is: true [2020-10-23 18:44:18,324 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2020-10-23 18:44:18,324 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:18,324 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 18:44:18,324 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:18,324 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:18,325 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:44:18,325 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:44:18,325 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:18,325 INFO L277 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 20 22) the Hoare annotation is: true [2020-10-23 18:44:18,325 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-23 18:44:18,325 INFO L274 CegarLoopResult]: For program point L21-2(lines 20 22) no Hoare annotation was computed. [2020-10-23 18:44:18,325 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 20 22) no Hoare annotation was computed. [2020-10-23 18:44:18,326 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 33 61) no Hoare annotation was computed. [2020-10-23 18:44:18,330 INFO L270 CegarLoopResult]: At program point L54-2(lines 54 58) the Hoare annotation is: (or (and (< (mod main_~index2~0 4294967296) 100000) (<= (+ (* 4294967296 (div main_~index2~0 4294967296)) main_~index1~0 1) (+ (* 4294967296 (div main_~index1~0 4294967296)) main_~index2~0))) (let ((.cse1 (mod (+ main_~index1~0 4294967295) 4294967296)) (.cse2 (mod (+ main_~index2~0 1) 4294967296))) (and (let ((.cse0 (select |#memory_int| |main_~#array~0.base|))) (= (mod (select .cse0 (+ (* .cse1 4) |main_~#array~0.offset|)) 4294967296) (mod (select .cse0 (+ (* .cse2 4) |main_~#array~0.offset|)) 4294967296))) (= |main_~#array~0.offset| 0) (< .cse1 .cse2) (< .cse2 100000)))) [2020-10-23 18:44:18,331 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~index2~0 4294967296)))) (and (= |main_~#array~0.offset| 0) (<= main_~index2~0 (+ .cse0 99999)) (<= (+ .cse0 main_~index1~0 1) (+ (* 4294967296 (div main_~index1~0 4294967296)) main_~index2~0)))) [2020-10-23 18:44:18,331 INFO L274 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-10-23 18:44:18,331 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 33 61) no Hoare annotation was computed. [2020-10-23 18:44:18,331 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 33 61) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-23 18:44:18,331 INFO L270 CegarLoopResult]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (+ main_~index2~0 1)) (.cse2 (* 4294967296 (div |main_#t~mem10| 4294967296))) (.cse1 (+ (* 4294967296 (div |main_#t~mem9| 4294967296)) |main_#t~mem10|))) (and (<= (+ (* 4294967296 (div .cse0 4294967296)) main_~index1~0) (+ (* 4294967296 (div (+ main_~index1~0 (- 1)) 4294967296)) main_~index2~0 1)) (< .cse1 (+ |main_#t~mem9| .cse2 1)) (< (mod .cse0 4294967296) 100000) (<= (+ |main_#t~mem9| .cse2) .cse1))) [2020-10-23 18:44:18,332 INFO L274 CegarLoopResult]: For program point L55-1(line 55) no Hoare annotation was computed. [2020-10-23 18:44:18,332 INFO L274 CegarLoopResult]: For program point L53(lines 53 59) no Hoare annotation was computed. [2020-10-23 18:44:18,332 INFO L270 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#array~0.base|)) (.cse1 (* 4294967296 (div main_~index2~0 4294967296)))) (and (= |main_#t~mem6| (select .cse0 (+ (* (mod main_~index2~0 4294967296) 4) |main_~#array~0.offset|))) (= (select .cse0 (+ (* (mod main_~index1~0 4294967296) 4) |main_~#array~0.offset|)) |main_#t~mem5|) (= |main_~#array~0.offset| 0) (<= main_~index2~0 (+ .cse1 99999)) (<= (+ .cse1 main_~index1~0 1) (+ (* 4294967296 (div main_~index1~0 4294967296)) main_~index2~0)))) [2020-10-23 18:44:18,333 INFO L274 CegarLoopResult]: For program point L47-1(line 47) no Hoare annotation was computed. [2020-10-23 18:44:18,333 INFO L270 CegarLoopResult]: At program point L45-1(lines 43 51) the Hoare annotation is: (let ((.cse3 (= |main_~#array~0.offset| 0))) (or (let ((.cse1 (mod (+ main_~index1~0 4294967295) 4294967296)) (.cse2 (mod (+ main_~index2~0 1) 4294967296))) (and (let ((.cse0 (select |#memory_int| |main_~#array~0.base|))) (= (mod (select .cse0 (+ (* .cse1 4) |main_~#array~0.offset|)) 4294967296) (mod (select .cse0 (+ (* .cse2 4) |main_~#array~0.offset|)) 4294967296))) .cse3 (< .cse1 .cse2) (< .cse2 100000))) (and (<= main_~index1~0 (+ (* 4294967296 (div main_~index1~0 4294967296)) 99999)) .cse3 (<= main_~index2~0 (+ (* 4294967296 (div main_~index2~0 4294967296)) 99999)) (= main_~loop_entered~0 0)))) [2020-10-23 18:44:18,333 INFO L270 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (<= main_~index1~0 (+ (* 4294967296 (div main_~index1~0 4294967296)) 99999)) (= |main_~#array~0.offset| 0) (= main_~loop_entered~0 0)) [2020-10-23 18:44:18,333 INFO L274 CegarLoopResult]: For program point L45-2(lines 34 61) no Hoare annotation was computed. [2020-10-23 18:44:18,333 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (= |main_~#array~0.offset| 0) (= main_~loop_entered~0 0)) [2020-10-23 18:44:18,334 INFO L274 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-10-23 18:44:18,334 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 23 29) the Hoare annotation is: true [2020-10-23 18:44:18,334 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-23 18:44:18,334 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 23 29) no Hoare annotation was computed. [2020-10-23 18:44:18,334 INFO L274 CegarLoopResult]: For program point L25(lines 25 27) no Hoare annotation was computed. [2020-10-23 18:44:18,334 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-10-23 18:44:18,334 INFO L274 CegarLoopResult]: For program point L25-2(lines 23 29) no Hoare annotation was computed. [2020-10-23 18:44:18,350 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,352 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,364 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,364 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,367 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:44:18 BoogieIcfgContainer [2020-10-23 18:44:18,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:44:18,385 INFO L168 Benchmark]: Toolchain (without parser) took 30422.71 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 134.5 MB in the beginning and 126.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 42.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:18,385 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 159.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:44:18,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.89 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 124.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:18,387 INFO L168 Benchmark]: Boogie Preprocessor took 39.95 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 122.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:18,388 INFO L168 Benchmark]: RCFGBuilder took 719.46 ms. Allocated memory is still 159.4 MB. Free memory was 122.6 MB in the beginning and 139.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:18,389 INFO L168 Benchmark]: TraceAbstraction took 29360.76 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 138.7 MB in the beginning and 126.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:18,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 159.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.89 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 124.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.95 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 122.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 719.46 ms. Allocated memory is still 159.4 MB. Free memory was 122.6 MB in the beginning and 139.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 29360.76 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 138.7 MB in the beginning and 126.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 43]: Loop Invariant [2020-10-23 18:44:18,405 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,405 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,406 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,406 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((unknown-#memory_int-unknown[array][(index1 + 4294967295) % 4294967296 * 4 + array] % 4294967296 == unknown-#memory_int-unknown[array][(index2 + 1) % 4294967296 * 4 + array] % 4294967296 && array == 0) && (index1 + 4294967295) % 4294967296 < (index2 + 1) % 4294967296) && (index2 + 1) % 4294967296 < 100000) || (((index1 <= 4294967296 * (index1 / 4294967296) + 99999 && array == 0) && index2 <= 4294967296 * (index2 / 4294967296) + 99999) && loop_entered == 0) - InvariantResult [Line: 54]: Loop Invariant [2020-10-23 18:44:18,407 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,407 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,407 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:44:18,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (index2 % 4294967296 < 100000 && 4294967296 * (index2 / 4294967296) + index1 + 1 <= 4294967296 * (index1 / 4294967296) + index2) || (((unknown-#memory_int-unknown[array][(index1 + 4294967295) % 4294967296 * 4 + array] % 4294967296 == unknown-#memory_int-unknown[array][(index2 + 1) % 4294967296 * 4 + array] % 4294967296 && array == 0) && (index1 + 4294967295) % 4294967296 < (index2 + 1) % 4294967296) && (index2 + 1) % 4294967296 < 100000) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 99 SDslu, 282 SDs, 0 SdLazy, 540 SolverSat, 67 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 117 SyntacticMatches, 10 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 36 PreInvPairs, 46 NumberOfFragments, 362 HoareAnnotationTreeSize, 36 FomulaSimplifications, 352 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 197 FormulaSimplificationTreeSizeReductionInter, 4.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 97615 SizeOfPredicates, 16 NumberOfNonLiveVariables, 302 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 81/88 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...