/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/loops-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:46:55,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:46:55,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:46:56,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:46:56,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:46:56,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:46:56,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:46:56,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:46:56,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:46:56,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:46:56,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:46:56,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:46:56,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:46:56,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:46:56,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:46:56,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:46:56,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:46:56,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:46:56,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:46:56,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:46:56,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:46:56,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:46:56,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:46:56,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:46:56,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:46:56,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:46:56,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:46:56,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:46:56,096 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 22:46:56,123 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:46:56,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:46:56,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:46:56,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:46:56,125 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:46:56,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:46:56,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:46:56,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:46:56,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:46:56,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:46:56,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:46:56,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:46:56,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:46:56,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:46:56,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:46:56,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:46:56,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:46:56,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:46:56,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:46:56,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:46:56,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:46:56,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:56,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:46:56,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:46:56,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:46:56,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:46:56,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:46:56,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:46:56,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:46:56,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:46:56,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:46:56,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:46:56,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:46:56,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:46:56,542 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:46:56,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-11-06 22:46:56,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8461cb88f/a6fde6c1584d4dda92dcb0752afeb969/FLAGa27265017 [2020-11-06 22:46:57,263 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:46:57,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-11-06 22:46:57,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8461cb88f/a6fde6c1584d4dda92dcb0752afeb969/FLAGa27265017 [2020-11-06 22:46:57,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8461cb88f/a6fde6c1584d4dda92dcb0752afeb969 [2020-11-06 22:46:57,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:46:57,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:46:57,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:57,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:46:57,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:46:57,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:57" (1/1) ... [2020-11-06 22:46:57,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af2a2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57, skipping insertion in model container [2020-11-06 22:46:57,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:57" (1/1) ... [2020-11-06 22:46:57,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:46:57,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:46:57,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:57,841 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:46:57,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:57,878 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:46:57,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57 WrapperNode [2020-11-06 22:46:57,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:57,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:46:57,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:46:57,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:46:57,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57" (1/1) ... [2020-11-06 22:46:57,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57" (1/1) ... [2020-11-06 22:46:57,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57" (1/1) ... [2020-11-06 22:46:57,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57" (1/1) ... [2020-11-06 22:46:57,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57" (1/1) ... [2020-11-06 22:46:57,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57" (1/1) ... [2020-11-06 22:46:57,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57" (1/1) ... [2020-11-06 22:46:57,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:46:57,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:46:57,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:46:57,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:46:57,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57" (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 22:46:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:46:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:46:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:46:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:46:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:46:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:46:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:46:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:46:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:46:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:46:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:46:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:46:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-06 22:46:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:46:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:46:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:46:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:46:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:46:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:46:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:46:58,426 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:46:58,426 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:46:58,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:58 BoogieIcfgContainer [2020-11-06 22:46:58,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:46:58,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:46:58,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:46:58,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:46:58,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:57" (1/3) ... [2020-11-06 22:46:58,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f599b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:58, skipping insertion in model container [2020-11-06 22:46:58,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:57" (2/3) ... [2020-11-06 22:46:58,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f599b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:58, skipping insertion in model container [2020-11-06 22:46:58,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:58" (3/3) ... [2020-11-06 22:46:58,459 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt2.c [2020-11-06 22:46:58,476 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:46:58,480 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:46:58,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:46:58,521 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:46:58,521 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:46:58,521 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:46:58,521 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:46:58,521 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:46:58,522 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:46:58,522 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:46:58,522 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:46:58,539 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-06 22:46:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:46:58,546 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:58,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:58,547 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:58,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1457529991, now seen corresponding path program 1 times [2020-11-06 22:46:58,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:58,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772772473] [2020-11-06 22:46:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:58,857 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-06 22:46:58,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:58,882 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 22:46:58,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772772473] [2020-11-06 22:46:58,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:58,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:46:58,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343184407] [2020-11-06 22:46:58,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:46:58,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:58,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:46:58,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:46:58,910 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-11-06 22:46:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:59,004 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-11-06 22:46:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:46:59,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-06 22:46:59,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:59,016 INFO L225 Difference]: With dead ends: 39 [2020-11-06 22:46:59,016 INFO L226 Difference]: Without dead ends: 16 [2020-11-06 22:46:59,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:46:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-06 22:46:59,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-06 22:46:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-06 22:46:59,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-06 22:46:59,064 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-11-06 22:46:59,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:59,065 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-06 22:46:59,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:46:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-06 22:46:59,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:46:59,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:59,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:59,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:46:59,067 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:59,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:59,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1772450652, now seen corresponding path program 1 times [2020-11-06 22:46:59,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:59,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346918942] [2020-11-06 22:46:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:59,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:59,511 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 22:46:59,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346918942] [2020-11-06 22:46:59,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:59,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:46:59,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798534479] [2020-11-06 22:46:59,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:46:59,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:59,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:46:59,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:46:59,516 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2020-11-06 22:46:59,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:59,962 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-11-06 22:46:59,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:46:59,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-06 22:46:59,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:59,964 INFO L225 Difference]: With dead ends: 30 [2020-11-06 22:46:59,965 INFO L226 Difference]: Without dead ends: 18 [2020-11-06 22:46:59,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:46:59,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-06 22:46:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-06 22:46:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-06 22:46:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-06 22:46:59,974 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-11-06 22:46:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:59,974 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-06 22:46:59,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:46:59,975 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-06 22:46:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 22:46:59,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:59,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:59,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:46:59,976 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:59,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:59,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1662926918, now seen corresponding path program 1 times [2020-11-06 22:46:59,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:59,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658585534] [2020-11-06 22:46:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:00,341 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-11-06 22:47:00,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:47:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:00,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658585534] [2020-11-06 22:47:00,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282574872] [2020-11-06 22:47:00,555 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 22:47:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:00,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-06 22:47:00,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:00,911 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:47:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:00,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:47:00,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2020-11-06 22:47:00,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903555187] [2020-11-06 22:47:00,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 22:47:00,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:00,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 22:47:00,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:47:00,983 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 14 states. [2020-11-06 22:47:01,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:01,635 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-11-06 22:47:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:47:01,637 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-11-06 22:47:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:01,638 INFO L225 Difference]: With dead ends: 33 [2020-11-06 22:47:01,638 INFO L226 Difference]: Without dead ends: 21 [2020-11-06 22:47:01,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-11-06 22:47:01,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-06 22:47:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-06 22:47:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-06 22:47:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-06 22:47:01,647 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2020-11-06 22:47:01,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:01,647 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-06 22:47:01,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 22:47:01,648 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-06 22:47:01,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:47:01,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:01,649 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:47:01,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:47:01,865 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:01,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:01,866 INFO L82 PathProgramCache]: Analyzing trace with hash -588928222, now seen corresponding path program 1 times [2020-11-06 22:47:01,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:01,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080168543] [2020-11-06 22:47:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:02,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:47:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:02,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080168543] [2020-11-06 22:47:02,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166509938] [2020-11-06 22:47:02,485 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 22:47:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:02,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-06 22:47:02,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:02,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:47:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:03,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:47:03,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2020-11-06 22:47:03,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499983225] [2020-11-06 22:47:03,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-06 22:47:03,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:03,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-06 22:47:03,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-11-06 22:47:03,017 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 19 states. [2020-11-06 22:47:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:04,297 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-11-06 22:47:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 22:47:04,298 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2020-11-06 22:47:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:04,300 INFO L225 Difference]: With dead ends: 40 [2020-11-06 22:47:04,301 INFO L226 Difference]: Without dead ends: 27 [2020-11-06 22:47:04,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2020-11-06 22:47:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-06 22:47:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-11-06 22:47:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-06 22:47:04,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-11-06 22:47:04,310 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-11-06 22:47:04,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:04,311 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-11-06 22:47:04,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-06 22:47:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-11-06 22:47:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:47:04,312 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:04,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:47:04,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:04,513 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:04,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:04,514 INFO L82 PathProgramCache]: Analyzing trace with hash 61938018, now seen corresponding path program 2 times [2020-11-06 22:47:04,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:04,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537968399] [2020-11-06 22:47:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:47:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:04,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537968399] [2020-11-06 22:47:04,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667454947] [2020-11-06 22:47:04,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:04,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:47:04,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:47:04,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-06 22:47:04,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:05,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:47:05,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15] total 20 [2020-11-06 22:47:05,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140779965] [2020-11-06 22:47:05,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-06 22:47:05,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-06 22:47:05,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2020-11-06 22:47:05,395 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 20 states. [2020-11-06 22:47:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:06,570 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-11-06 22:47:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 22:47:06,571 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 25 [2020-11-06 22:47:06,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:06,572 INFO L225 Difference]: With dead ends: 37 [2020-11-06 22:47:06,572 INFO L226 Difference]: Without dead ends: 28 [2020-11-06 22:47:06,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2020-11-06 22:47:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-06 22:47:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-11-06 22:47:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-06 22:47:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-06 22:47:06,581 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 25 [2020-11-06 22:47:06,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:06,582 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-06 22:47:06,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-06 22:47:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-06 22:47:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:47:06,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:47:06,583 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:47:06,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:06,784 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:47:06,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:47:06,786 INFO L82 PathProgramCache]: Analyzing trace with hash -747408608, now seen corresponding path program 3 times [2020-11-06 22:47:06,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:47:06,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085650587] [2020-11-06 22:47:06,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:47:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:07,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:47:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:47:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:07,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085650587] [2020-11-06 22:47:07,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009143682] [2020-11-06 22:47:07,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:08,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-06 22:47:08,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:47:08,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-06 22:47:08,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:47:08,918 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:47:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:47:09,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:47:09,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 30 [2020-11-06 22:47:09,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578136628] [2020-11-06 22:47:09,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-06 22:47:09,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:47:09,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-06 22:47:09,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2020-11-06 22:47:09,072 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 30 states. [2020-11-06 22:47:10,659 WARN L194 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-11-06 22:47:10,917 WARN L194 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-11-06 22:47:11,189 WARN L194 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-11-06 22:47:11,507 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-11-06 22:47:11,805 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-11-06 22:47:12,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:47:12,445 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-11-06 22:47:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-06 22:47:12,446 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 25 [2020-11-06 22:47:12,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:47:12,447 INFO L225 Difference]: With dead ends: 44 [2020-11-06 22:47:12,447 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:47:12,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=308, Invalid=2142, Unknown=0, NotChecked=0, Total=2450 [2020-11-06 22:47:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:47:12,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:47:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:47:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:47:12,450 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-11-06 22:47:12,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:47:12,451 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:47:12,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-06 22:47:12,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:47:12,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:47:12,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:47:12,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:47:13,114 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 25 [2020-11-06 22:47:13,690 WARN L194 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 45 [2020-11-06 22:47:13,694 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-11-06 22:47:13,695 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-06 22:47:13,695 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-11-06 22:47:13,695 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-06 22:47:13,695 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:47:13,695 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)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#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 22:47:13,695 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:47:13,695 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:47:13,695 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-11-06 22:47:13,696 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:47:13,696 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:47:13,696 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2020-11-06 22:47:13,696 INFO L266 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-11-06 22:47:13,696 INFO L266 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-11-06 22:47:13,696 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-11-06 22:47:13,696 INFO L266 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-11-06 22:47:13,696 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 16 33) the Hoare annotation is: true [2020-11-06 22:47:13,696 INFO L266 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-11-06 22:47:13,696 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 16 33) no Hoare annotation was computed. [2020-11-06 22:47:13,696 INFO L266 CegarLoopResult]: For program point L25-2(lines 25 28) no Hoare annotation was computed. [2020-11-06 22:47:13,697 INFO L262 CegarLoopResult]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse3 (mod main_~n~0 4294967296)) (.cse5 (= main_~j~0 1)) (.cse2 (* 4294967296 (div main_~n~0 4294967296))) (.cse0 (= main_~j~0 0)) (.cse4 (= main_~i~0 1))) (or (and (= main_~i~0 0) .cse0 (= main_~l~0 0)) (let ((.cse1 (+ main_~i~0 main_~j~0))) (and (<= .cse1 main_~l~0) (<= (+ .cse2 main_~l~0 4) (+ main_~i~0 main_~j~0 main_~n~0)) (<= main_~l~0 .cse1))) (and (= main_~l~0 2) (< 1 .cse3) .cse4 .cse5) (and (= main_~i~0 2) (= main_~l~0 3) (< 2 .cse3) .cse5) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (and (<= (+ .cse2 2) (+ main_~i~0 main_~n~0)) (= main_~l~0 1) .cse0 .cse4))) [2020-11-06 22:47:13,697 INFO L262 CegarLoopResult]: At program point L23-3(lines 23 30) the Hoare annotation is: (or (let ((.cse2 (div (+ main_~i~0 main_~j~0) 4294967296)) (.cse3 (div main_~l~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ (* 4294967296 .cse2) main_~l~0))) (and (< .cse0 (+ main_~i~0 main_~j~0 .cse1 1)) (< .cse2 (+ .cse3 1)) (<= (+ main_~i~0 main_~j~0 .cse1) .cse0)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-06 22:47:13,697 INFO L266 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-06 22:47:13,697 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 16 33) no Hoare annotation was computed. [2020-11-06 22:47:13,697 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2020-11-06 22:47:13,698 INFO L262 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-06 22:47:13,698 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 13) no Hoare annotation was computed. [2020-11-06 22:47:13,698 INFO L266 CegarLoopResult]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-11-06 22:47:13,698 INFO L266 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-11-06 22:47:13,698 INFO L266 CegarLoopResult]: For program point L9-2(lines 8 13) no Hoare annotation was computed. [2020-11-06 22:47:13,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:47:13 BoogieIcfgContainer [2020-11-06 22:47:13,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:47:13,725 INFO L168 Benchmark]: Toolchain (without parser) took 16106.94 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 126.8 MB in the beginning and 145.0 MB in the end (delta: -18.2 MB). Peak memory consumption was 122.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:13,726 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:47:13,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:13,728 INFO L168 Benchmark]: Boogie Preprocessor took 38.91 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:13,729 INFO L168 Benchmark]: RCFGBuilder took 507.99 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 101.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:13,731 INFO L168 Benchmark]: TraceAbstraction took 15271.73 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 134.5 MB in the beginning and 145.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 129.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:47:13,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.91 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 507.99 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 101.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15271.73 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 134.5 MB in the beginning and 145.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 129.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 23]: Loop Invariant Derived loop invariant: (((((((i == 0 && j == 0) && l == 0) || ((i + j <= l && 4294967296 * (n / 4294967296) + l + 4 <= i + j + n) && l <= i + j)) || (((l == 2 && 1 < n % 4294967296) && i == 1) && j == 1)) || (((i == 2 && l == 3) && 2 < n % 4294967296) && j == 1)) || !(SIZE <= 20000001)) || !(20000001 <= SIZE)) || (((4294967296 * (n / 4294967296) + 2 <= i + n && l == 1) && j == 0) && i == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.1s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 166 SDslu, 280 SDs, 0 SdLazy, 843 SolverSat, 149 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=5, 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 38 PreInvPairs, 53 NumberOfFragments, 200 HoareAnnotationTreeSize, 38 FomulaSimplifications, 270 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 881 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 37746 SizeOfPredicates, 12 NumberOfNonLiveVariables, 485 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 7/100 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...