/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/nla-digbench/mannadiv.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:47:51,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:47:51,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:47:51,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:47:51,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:47:51,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:47:51,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:47:51,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:47:51,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:47:51,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:47:51,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:47:51,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:47:51,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:47:51,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:47:51,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:47:51,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:47:51,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:47:51,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:47:51,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:47:51,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:47:51,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:47:51,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:47:51,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:47:51,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:47:51,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:47:51,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:47:51,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:47:51,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:47:51,952 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 22:47:52,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:47:52,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:47:52,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:47:52,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:47:52,006 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:47:52,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:47:52,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:47:52,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:47:52,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:47:52,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:47:52,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:47:52,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:47:52,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:47:52,010 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:47:52,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:47:52,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:47:52,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:47:52,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:47:52,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:47:52,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:47:52,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:47:52,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:47:52,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:47:52,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:47:52,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:47:52,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:47:52,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:47:52,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:47:52,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:47:52,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:47:52,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:47:52,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:47:52,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:47:52,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:47:52,438 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:47:52,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/mannadiv.c [2020-11-06 22:47:52,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de862351e/e5df3bc18fcd49ab9089c0bc62206f51/FLAGd4420c31e [2020-11-06 22:47:53,210 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:47:53,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/mannadiv.c [2020-11-06 22:47:53,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de862351e/e5df3bc18fcd49ab9089c0bc62206f51/FLAGd4420c31e [2020-11-06 22:47:53,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de862351e/e5df3bc18fcd49ab9089c0bc62206f51 [2020-11-06 22:47:53,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:47:53,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:47:53,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:47:53,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:47:53,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:47:53,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:53" (1/1) ... [2020-11-06 22:47:53,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68094d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53, skipping insertion in model container [2020-11-06 22:47:53,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:53" (1/1) ... [2020-11-06 22:47:53,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:47:53,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:47:53,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:47:53,898 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:47:53,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:47:53,935 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:47:53,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53 WrapperNode [2020-11-06 22:47:53,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:47:53,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:47:53,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:47:53,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:47:53,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53" (1/1) ... [2020-11-06 22:47:53,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53" (1/1) ... [2020-11-06 22:47:53,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53" (1/1) ... [2020-11-06 22:47:53,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53" (1/1) ... [2020-11-06 22:47:53,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53" (1/1) ... [2020-11-06 22:47:53,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53" (1/1) ... [2020-11-06 22:47:53,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53" (1/1) ... [2020-11-06 22:47:53,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:47:53,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:47:53,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:47:53,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:47:53,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53" (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 22:47:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:47:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:47:54,049 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:47:54,050 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:47:54,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:47:54,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:47:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:47:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:47:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:47:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:47:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:47:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:47:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:47:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:47:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:47:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:47:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:47:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:47:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:47:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:47:54,310 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:47:54,311 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:47:54,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:54 BoogieIcfgContainer [2020-11-06 22:47:54,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:47:54,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:47:54,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:47:54,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:47:54,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:47:53" (1/3) ... [2020-11-06 22:47:54,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da64c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:54, skipping insertion in model container [2020-11-06 22:47:54,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:53" (2/3) ... [2020-11-06 22:47:54,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da64c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:54, skipping insertion in model container [2020-11-06 22:47:54,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:54" (3/3) ... [2020-11-06 22:47:54,323 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv.c [2020-11-06 22:47:54,340 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:47:54,344 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:47:54,358 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:47:54,410 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:47:54,411 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:47:54,411 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:47:54,411 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:47:54,411 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:47:54,411 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:47:54,411 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:47:54,412 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:47:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-06 22:47:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:47:54,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:54,457 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] [2020-11-06 22:47:54,458 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:54,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:54,466 INFO L82 PathProgramCache]: Analyzing trace with hash 451539001, now seen corresponding path program 1 times [2020-11-06 22:47:54,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:54,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233685761] [2020-11-06 22:47:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:54,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:47:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:54,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:47:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:54,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-11-06 22:47:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:47:54,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233685761] [2020-11-06 22:47:54,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:47:54,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:47:54,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026926867] [2020-11-06 22:47:54,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:47:54,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:55,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:47:55,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:47:55,011 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-11-06 22:47:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:55,153 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2020-11-06 22:47:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:47:55,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-06 22:47:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:55,179 INFO L225 Difference]: With dead ends: 55 [2020-11-06 22:47:55,179 INFO L226 Difference]: Without dead ends: 25 [2020-11-06 22:47:55,185 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 [2020-11-06 22:47:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-06 22:47:55,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-06 22:47:55,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-06 22:47:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-06 22:47:55,259 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 23 [2020-11-06 22:47:55,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:55,260 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-06 22:47:55,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:47:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-06 22:47:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:47:55,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:55,263 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] [2020-11-06 22:47:55,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:47:55,265 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:55,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:55,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1624006843, now seen corresponding path program 1 times [2020-11-06 22:47:55,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:55,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878623689] [2020-11-06 22:47:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:55,316 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:47:55,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893549385] [2020-11-06 22:47:55,317 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 22:47:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:55,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-06 22:47:55,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:47:55,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878623689] [2020-11-06 22:47:55,546 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:47:55,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893549385] [2020-11-06 22:47:55,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:47:55,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:47:55,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000798950] [2020-11-06 22:47:55,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:47:55,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:55,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:47:55,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:47:55,550 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 8 states. [2020-11-06 22:47:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:55,675 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-11-06 22:47:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:47:55,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-06 22:47:55,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:55,678 INFO L225 Difference]: With dead ends: 37 [2020-11-06 22:47:55,679 INFO L226 Difference]: Without dead ends: 34 [2020-11-06 22:47:55,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:47:55,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-06 22:47:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-11-06 22:47:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-06 22:47:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-06 22:47:55,693 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-11-06 22:47:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:55,695 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-06 22:47:55,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:47:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-06 22:47:55,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 22:47:55,697 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:55,697 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-06 22:47:55,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:47:55,912 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:55,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2043930870, now seen corresponding path program 1 times [2020-11-06 22:47:55,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:55,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686295918] [2020-11-06 22:47:55,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:55,932 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:47:55,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533621900] [2020-11-06 22:47:55,933 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 [2020-11-06 22:47:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:55,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-06 22:47:55,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:47:56,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686295918] [2020-11-06 22:47:56,114 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:47:56,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533621900] [2020-11-06 22:47:56,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:47:56,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-06 22:47:56,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623450977] [2020-11-06 22:47:56,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:47:56,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:56,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:47:56,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:47:56,118 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-11-06 22:47:56,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:56,217 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-11-06 22:47:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:47:56,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-11-06 22:47:56,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:56,219 INFO L225 Difference]: With dead ends: 31 [2020-11-06 22:47:56,219 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:47:56,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:47:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:47:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:47:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:47:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:47:56,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-11-06 22:47:56,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:56,224 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:47:56,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:47:56,224 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:47:56,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:47:56,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:56,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:47:56,701 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2020-11-06 22:47:56,702 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 9) the Hoare annotation is: true [2020-11-06 22:47:56,702 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2020-11-06 22:47:56,702 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-06 22:47:56,703 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:47:56,703 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-06 22:47:56,703 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:47:56,703 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:47:56,704 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:47:56,704 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:47:56,704 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:47:56,704 INFO L269 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2020-11-06 22:47:56,704 INFO L266 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-06 22:47:56,705 INFO L266 CegarLoopResult]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2020-11-06 22:47:56,705 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2020-11-06 22:47:56,705 INFO L262 CegarLoopResult]: At program point L35-2(lines 35 48) the Hoare annotation is: (let ((.cse0 (* main_~y1~0 main_~x2~0))) (and (= main_~x1~0 (+ main_~y2~0 .cse0)) (not (= main_~x2~0 0)) (= (+ main_~y2~0 main_~y3~0 .cse0) main_~x1~0))) [2020-11-06 22:47:56,705 INFO L266 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-11-06 22:47:56,705 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 22 51) no Hoare annotation was computed. [2020-11-06 22:47:56,706 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 22 51) no Hoare annotation was computed. [2020-11-06 22:47:56,706 INFO L266 CegarLoopResult]: For program point L40(lines 40 47) no Hoare annotation was computed. [2020-11-06 22:47:56,706 INFO L262 CegarLoopResult]: At program point L40-2(lines 35 48) the Hoare annotation is: (and (not (= main_~x2~0 0)) (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0)) [2020-11-06 22:47:56,706 INFO L262 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (not (= main_~x2~0 0)) (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0)) [2020-11-06 22:47:56,706 INFO L266 CegarLoopResult]: For program point L36-1(lines 35 48) no Hoare annotation was computed. [2020-11-06 22:47:56,706 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 22 51) the Hoare annotation is: true [2020-11-06 22:47:56,707 INFO L269 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-11-06 22:47:56,707 INFO L269 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-11-06 22:47:56,709 INFO L266 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-11-06 22:47:56,709 INFO L262 CegarLoopResult]: At program point L17(lines 17 18) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-11-06 22:47:56,709 INFO L266 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-06 22:47:56,709 INFO L266 CegarLoopResult]: For program point L16-1(lines 15 21) no Hoare annotation was computed. [2020-11-06 22:47:56,710 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2020-11-06 22:47:56,710 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2020-11-06 22:47:56,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:47:56 BoogieIcfgContainer [2020-11-06 22:47:56,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:47:56,736 INFO L168 Benchmark]: Toolchain (without parser) took 3123.77 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 126.0 MB in the beginning and 123.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 38.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:56,737 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:47:56,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 116.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:56,741 INFO L168 Benchmark]: Boogie Preprocessor took 37.86 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:56,743 INFO L168 Benchmark]: RCFGBuilder took 337.39 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 100.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:56,751 INFO L168 Benchmark]: TraceAbstraction took 2416.78 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 100.2 MB in the beginning and 123.9 MB in the end (delta: -23.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:56,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 316.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 116.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.86 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 337.39 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 100.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2416.78 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 100.2 MB in the beginning and 123.9 MB in the end (delta: -23.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 35]: Loop Invariant Derived loop invariant: !(x2 == 0) && y2 + y3 + y1 * x2 == x1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 45 SDslu, 178 SDs, 0 SdLazy, 113 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 25 PreInvPairs, 31 NumberOfFragments, 89 HoareAnnotationTreeSize, 25 FomulaSimplifications, 152 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 248 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 4014 SizeOfPredicates, 7 NumberOfNonLiveVariables, 247 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 13/14 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...