/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-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:46:23,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:46:23,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:46:24,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:46:24,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:46:24,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:46:24,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:46:24,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:46:24,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:46:24,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:46:24,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:46:24,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:46:24,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:46:24,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:46:24,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:46:24,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:46:24,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:46:24,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:46:24,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:46:24,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:46:24,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:46:24,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:46:24,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:46:24,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:46:24,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:46:24,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:46:24,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:46:24,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:46:24,091 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 [2020-11-06 22:46:24,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:46:24,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:46:24,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:46:24,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:46:24,156 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:46:24,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:46:24,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:46:24,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:46:24,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:46:24,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:46:24,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:46:24,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:46:24,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:46:24,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:46:24,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:46:24,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:46:24,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:46:24,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:46:24,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:46:24,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:46:24,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:46:24,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:24,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:46:24,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:46:24,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:46:24,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:46:24,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:46:24,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:46:24,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:46:24,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:46:24,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:46:24,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:46:24,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:46:24,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:46:24,633 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:46:24,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-11-06 22:46:24,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5968b91f9/356951a137c9433fbe768262b01f0d50/FLAG1113b7375 [2020-11-06 22:46:25,378 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:46:25,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-11-06 22:46:25,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5968b91f9/356951a137c9433fbe768262b01f0d50/FLAG1113b7375 [2020-11-06 22:46:25,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5968b91f9/356951a137c9433fbe768262b01f0d50 [2020-11-06 22:46:25,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:46:25,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:46:25,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:25,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:46:25,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:46:25,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:25" (1/1) ... [2020-11-06 22:46:25,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3630506e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:25, skipping insertion in model container [2020-11-06 22:46:25,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:25" (1/1) ... [2020-11-06 22:46:25,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:46:25,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:46:25,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:25,974 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:46:26,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:26,029 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:46:26,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26 WrapperNode [2020-11-06 22:46:26,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:26,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:46:26,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:46:26,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:46:26,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ... [2020-11-06 22:46:26,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ... [2020-11-06 22:46:26,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ... [2020-11-06 22:46:26,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ... [2020-11-06 22:46:26,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ... [2020-11-06 22:46:26,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ... [2020-11-06 22:46:26,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (1/1) ... [2020-11-06 22:46:26,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:46:26,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:46:26,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:46:26,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:46:26,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (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 [2020-11-06 22:46:26,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:46:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:46:26,217 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:46:26,218 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:46:26,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:46:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:46:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:46:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:46:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:46:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:46:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:46:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:46:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:46:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:46:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:46:26,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:46:26,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:46:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:46:26,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:46:26,571 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:46:26,571 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 22:46:26,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:26 BoogieIcfgContainer [2020-11-06 22:46:26,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:46:26,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:46:26,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:46:26,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:46:26,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:25" (1/3) ... [2020-11-06 22:46:26,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2221f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:26, skipping insertion in model container [2020-11-06 22:46:26,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:26" (2/3) ... [2020-11-06 22:46:26,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2221f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:26, skipping insertion in model container [2020-11-06 22:46:26,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:26" (3/3) ... [2020-11-06 22:46:26,584 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-11-06 22:46:26,601 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:46:26,605 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:46:26,662 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:46:26,762 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:46:26,762 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:46:26,762 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:46:26,763 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:46:26,763 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:46:26,763 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:46:26,763 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:46:26,763 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:46:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-06 22:46:26,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-06 22:46:26,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:26,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:26,791 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:26,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:26,798 INFO L82 PathProgramCache]: Analyzing trace with hash -988663557, now seen corresponding path program 1 times [2020-11-06 22:46:26,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:26,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246626067] [2020-11-06 22:46:26,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:27,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246626067] [2020-11-06 22:46:27,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:27,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:46:27,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089571781] [2020-11-06 22:46:27,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:46:27,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:27,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:46:27,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:46:27,235 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2020-11-06 22:46:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:27,497 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-06 22:46:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:46:27,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-06 22:46:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:27,507 INFO L225 Difference]: With dead ends: 38 [2020-11-06 22:46:27,507 INFO L226 Difference]: Without dead ends: 17 [2020-11-06 22:46:27,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:46:27,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-06 22:46:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-06 22:46:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-06 22:46:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-06 22:46:27,554 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-11-06 22:46:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:27,555 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-06 22:46:27,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:46:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-06 22:46:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 22:46:27,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:27,556 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:27,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:46:27,557 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:27,558 INFO L82 PathProgramCache]: Analyzing trace with hash -982937320, now seen corresponding path program 1 times [2020-11-06 22:46:27,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:27,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633214323] [2020-11-06 22:46:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:27,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:27,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633214323] [2020-11-06 22:46:27,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714861496] [2020-11-06 22:46:27,747 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 [2020-11-06 22:46:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:27,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-06 22:46:27,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:27,965 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:46:27,979 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:46:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:28,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:28,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-11-06 22:46:28,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546196243] [2020-11-06 22:46:28,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:46:28,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:28,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:46:28,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:46:28,035 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-11-06 22:46:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:28,242 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-06 22:46:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:46:28,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-11-06 22:46:28,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:28,246 INFO L225 Difference]: With dead ends: 23 [2020-11-06 22:46:28,246 INFO L226 Difference]: Without dead ends: 19 [2020-11-06 22:46:28,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:46:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-06 22:46:28,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-06 22:46:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-06 22:46:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-06 22:46:28,259 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-11-06 22:46:28,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:28,260 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-06 22:46:28,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:46:28,260 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-06 22:46:28,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 22:46:28,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:28,264 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:28,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:46:28,479 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:28,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:28,480 INFO L82 PathProgramCache]: Analyzing trace with hash 225009141, now seen corresponding path program 2 times [2020-11-06 22:46:28,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:28,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378765493] [2020-11-06 22:46:28,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:28,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:46:28,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378765493] [2020-11-06 22:46:28,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:28,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:46:28,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101197269] [2020-11-06 22:46:28,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:46:28,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:28,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:46:28,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:46:28,635 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-11-06 22:46:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:28,682 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-06 22:46:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:46:28,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-06 22:46:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:28,683 INFO L225 Difference]: With dead ends: 19 [2020-11-06 22:46:28,683 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:46:28,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:46:28,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:46:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:46:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:46:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:46:28,685 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-06 22:46:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:28,685 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:46:28,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:46:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:46:28,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:46:28,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:46:28,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:46:28,791 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-11-06 22:46:28,791 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-06 22:46:28,791 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-11-06 22:46:28,792 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-06 22:46:28,792 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:28,792 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~__return_65~0 |old(~__return_65~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-11-06 22:46:28,792 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:28,792 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:28,793 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:46:28,793 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:46:28,793 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:28,793 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-11-06 22:46:28,793 INFO L266 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-06 22:46:28,793 INFO L266 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-11-06 22:46:28,793 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-11-06 22:46:28,794 INFO L266 CegarLoopResult]: For program point L32(lines 32 71) no Hoare annotation was computed. [2020-11-06 22:46:28,794 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 14 74) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-11-06 22:46:28,794 INFO L266 CegarLoopResult]: For program point L26(lines 26 72) no Hoare annotation was computed. [2020-11-06 22:46:28,794 INFO L262 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: false [2020-11-06 22:46:28,794 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 14 74) no Hoare annotation was computed. [2020-11-06 22:46:28,794 INFO L266 CegarLoopResult]: For program point L57-1(line 57) no Hoare annotation was computed. [2020-11-06 22:46:28,795 INFO L266 CegarLoopResult]: For program point L55(lines 55 64) no Hoare annotation was computed. [2020-11-06 22:46:28,795 INFO L266 CegarLoopResult]: For program point L20(lines 20 73) no Hoare annotation was computed. [2020-11-06 22:46:28,795 INFO L262 CegarLoopResult]: At program point L46(lines 33 67) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-11-06 22:46:28,795 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 14 74) no Hoare annotation was computed. [2020-11-06 22:46:28,795 INFO L266 CegarLoopResult]: For program point L40(lines 40 66) no Hoare annotation was computed. [2020-11-06 22:46:28,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:46:28 BoogieIcfgContainer [2020-11-06 22:46:28,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:46:28,814 INFO L168 Benchmark]: Toolchain (without parser) took 3076.97 ms. Allocated memory was 152.0 MB in the beginning and 191.9 MB in the end (delta: 39.8 MB). Free memory was 126.9 MB in the beginning and 133.3 MB in the end (delta: -6.4 MB). Peak memory consumption was 34.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:28,815 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:46:28,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.70 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 116.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:28,817 INFO L168 Benchmark]: Boogie Preprocessor took 62.39 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 114.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:28,818 INFO L168 Benchmark]: RCFGBuilder took 476.70 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 101.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:28,819 INFO L168 Benchmark]: TraceAbstraction took 2235.56 ms. Allocated memory was 152.0 MB in the beginning and 191.9 MB in the end (delta: 39.8 MB). Free memory was 100.8 MB in the beginning and 133.3 MB in the end (delta: -32.5 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:28,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.70 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 116.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.39 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 114.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 476.70 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 101.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2235.56 ms. Allocated memory was 152.0 MB in the beginning and 191.9 MB in the end (delta: 39.8 MB). Free memory was 100.8 MB in the beginning and 133.3 MB in the end (delta: -32.5 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 33]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 26 SDslu, 88 SDs, 0 SdLazy, 118 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 56 HoareAnnotationTreeSize, 9 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 4184 SizeOfPredicates, 4 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...