/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ss4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:34:55,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:34:55,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:34:55,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:34:55,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:34:55,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:34:55,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:34:55,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:34:55,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:34:55,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:34:55,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:34:55,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:34:55,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:34:55,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:34:55,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:34:55,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:34:55,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:34:55,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:34:55,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:34:55,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:34:55,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:34:55,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:34:55,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:34:55,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:34:55,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:34:55,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:34:55,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:34:55,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:34:55,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:34:55,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:34:55,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:34:55,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:34:55,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:34:55,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:34:55,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:34:55,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:34:55,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:34:55,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:34:55,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:34:55,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:34:55,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:34:55,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:34:55,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:34:55,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:34:55,835 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:34:55,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:34:55,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:34:55,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:34:55,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:34:55,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:34:55,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:34:55,837 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:34:56,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:34:56,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:34:56,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:34:56,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:34:56,256 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:34:56,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss4f.c [2020-11-07 06:34:56,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca84d7aa/989a3ab1b2a04859b40ff446ed39b738/FLAG5c6e3c577 [2020-11-07 06:34:56,976 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:34:56,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss4f.c [2020-11-07 06:34:56,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca84d7aa/989a3ab1b2a04859b40ff446ed39b738/FLAG5c6e3c577 [2020-11-07 06:34:57,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca84d7aa/989a3ab1b2a04859b40ff446ed39b738 [2020-11-07 06:34:57,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:34:57,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:34:57,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:34:57,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:34:57,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:34:57,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:34:57" (1/1) ... [2020-11-07 06:34:57,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c058000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57, skipping insertion in model container [2020-11-07 06:34:57,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:34:57" (1/1) ... [2020-11-07 06:34:57,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:34:57,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:34:57,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:34:57,546 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:34:57,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:34:57,599 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:34:57,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57 WrapperNode [2020-11-07 06:34:57,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:34:57,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:34:57,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:34:57,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:34:57,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57" (1/1) ... [2020-11-07 06:34:57,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57" (1/1) ... [2020-11-07 06:34:57,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57" (1/1) ... [2020-11-07 06:34:57,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57" (1/1) ... [2020-11-07 06:34:57,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57" (1/1) ... [2020-11-07 06:34:57,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57" (1/1) ... [2020-11-07 06:34:57,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57" (1/1) ... [2020-11-07 06:34:57,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:34:57,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:34:57,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:34:57,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:34:57,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57" (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 [2020-11-07 06:34:57,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:34:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:34:57,805 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:34:57,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:34:57,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:34:57,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:34:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:34:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:34:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:34:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:34:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:34:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:34:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:34:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 06:34:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:34:57,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 06:34:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:34:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:34:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:34:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:34:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:34:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:34:58,591 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:34:58,591 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 06:34:58,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:34:58 BoogieIcfgContainer [2020-11-07 06:34:58,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:34:58,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:34:58,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:34:58,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:34:58,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:34:57" (1/3) ... [2020-11-07 06:34:58,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3d42f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:34:58, skipping insertion in model container [2020-11-07 06:34:58,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:34:57" (2/3) ... [2020-11-07 06:34:58,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3d42f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:34:58, skipping insertion in model container [2020-11-07 06:34:58,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:34:58" (3/3) ... [2020-11-07 06:34:58,603 INFO L111 eAbstractionObserver]: Analyzing ICFG ss4f.c [2020-11-07 06:34:58,620 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:34:58,624 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:34:58,637 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:34:58,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:34:58,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:34:58,662 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:34:58,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:34:58,663 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:34:58,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:34:58,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:34:58,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:34:58,679 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-11-07 06:34:58,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 06:34:58,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:34:58,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:34:58,693 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:34:58,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:34:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1096264939, now seen corresponding path program 1 times [2020-11-07 06:34:58,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:34:58,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343706762] [2020-11-07 06:34:58,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:34:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:58,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:34:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:59,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 06:34:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:34:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:34:59,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343706762] [2020-11-07 06:34:59,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:34:59,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 06:34:59,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942090966] [2020-11-07 06:34:59,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 06:34:59,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:34:59,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 06:34:59,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:34:59,061 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 3 states. [2020-11-07 06:34:59,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:34:59,347 INFO L93 Difference]: Finished difference Result 154 states and 174 transitions. [2020-11-07 06:34:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 06:34:59,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-11-07 06:34:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:34:59,360 INFO L225 Difference]: With dead ends: 154 [2020-11-07 06:34:59,361 INFO L226 Difference]: Without dead ends: 78 [2020-11-07 06:34:59,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:34:59,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-07 06:34:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-07 06:34:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-07 06:34:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-11-07 06:34:59,426 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 49 [2020-11-07 06:34:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:34:59,427 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-11-07 06:34:59,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 06:34:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-11-07 06:34:59,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 06:34:59,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:34:59,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:34:59,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:34:59,431 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:34:59,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:34:59,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1489202635, now seen corresponding path program 1 times [2020-11-07 06:34:59,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:34:59,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114723955] [2020-11-07 06:34:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:34:59,484 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-07 06:34:59,485 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-11-07 06:34:59,485 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 06:34:59,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:34:59,517 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-07 06:34:59,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:34:59 BoogieIcfgContainer [2020-11-07 06:34:59,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:34:59,523 INFO L168 Benchmark]: Toolchain (without parser) took 2207.10 ms. Allocated memory is still 155.2 MB. Free memory was 131.0 MB in the beginning and 134.4 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:34:59,526 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:34:59,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.85 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 120.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:59,532 INFO L168 Benchmark]: Boogie Preprocessor took 89.04 ms. Allocated memory is still 155.2 MB. Free memory was 120.1 MB in the beginning and 118.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:59,533 INFO L168 Benchmark]: RCFGBuilder took 902.90 ms. Allocated memory is still 155.2 MB. Free memory was 118.4 MB in the beginning and 126.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-11-07 06:34:59,534 INFO L168 Benchmark]: TraceAbstraction took 922.97 ms. Allocated memory is still 155.2 MB. Free memory was 126.4 MB in the beginning and 134.4 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:34:59,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.85 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 120.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.04 ms. Allocated memory is still 155.2 MB. Free memory was 120.1 MB in the beginning and 118.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 902.90 ms. Allocated memory is still 155.2 MB. Free memory was 118.4 MB in the beginning and 126.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 922.97 ms. Allocated memory is still 155.2 MB. Free memory was 126.4 MB in the beginning and 134.4 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND FALSE !(i