/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/array-fpi/s32iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:24,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:24,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:24,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:24,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:24,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:24,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:24,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:24,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:24,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:24,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:24,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-10-23 18:42:24,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:24,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:24,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:24,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:42:24,559 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:24,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:24,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:24,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:24,562 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:24,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:24,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:24,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:24,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:24,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:24,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:24,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:24,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:24,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:24,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:24,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:24,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:24,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:24,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:24,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:24,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:24,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:24,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:24,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:24,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:24,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:24,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:24,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:24,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:24,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:25,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:25,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:25,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:25,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:25,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:25,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s32iff.c [2020-10-23 18:42:25,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc40dab44/7774c64a405542feafe92ebf7eca02fd/FLAG92d1d3e35 [2020-10-23 18:42:25,761 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:25,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s32iff.c [2020-10-23 18:42:25,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc40dab44/7774c64a405542feafe92ebf7eca02fd/FLAG92d1d3e35 [2020-10-23 18:42:26,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc40dab44/7774c64a405542feafe92ebf7eca02fd [2020-10-23 18:42:26,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:26,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:26,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:26,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:26,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:26,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4599ad79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26, skipping insertion in model container [2020-10-23 18:42:26,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:26,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:26,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:26,357 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:26,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:26,401 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:26,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26 WrapperNode [2020-10-23 18:42:26,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:26,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:26,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:26,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:26,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... [2020-10-23 18:42:26,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:26,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:26,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:26,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:26,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:26,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:26,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:26,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:27,126 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:27,126 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 18:42:27,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:27 BoogieIcfgContainer [2020-10-23 18:42:27,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:27,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:27,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:27,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:27,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:26" (1/3) ... [2020-10-23 18:42:27,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fb12d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:27, skipping insertion in model container [2020-10-23 18:42:27,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:26" (2/3) ... [2020-10-23 18:42:27,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fb12d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:27, skipping insertion in model container [2020-10-23 18:42:27,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:27" (3/3) ... [2020-10-23 18:42:27,138 INFO L111 eAbstractionObserver]: Analyzing ICFG s32iff.c [2020-10-23 18:42:27,153 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:27,159 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:27,173 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:27,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:27,202 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:27,203 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:27,203 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:27,203 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:27,203 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:27,203 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:27,203 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:27,222 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-23 18:42:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:42:27,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:27,230 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] [2020-10-23 18:42:27,230 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:27,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1702539242, now seen corresponding path program 1 times [2020-10-23 18:42:27,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:27,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469280185] [2020-10-23 18:42:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:27,576 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-23 18:42:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:27,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:27,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469280185] [2020-10-23 18:42:27,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:27,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:27,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798277247] [2020-10-23 18:42:27,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:27,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:27,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:27,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:27,687 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-10-23 18:42:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:27,893 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-23 18:42:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:27,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-23 18:42:27,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:27,907 INFO L225 Difference]: With dead ends: 67 [2020-10-23 18:42:27,907 INFO L226 Difference]: Without dead ends: 30 [2020-10-23 18:42:27,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-23 18:42:27,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-23 18:42:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-23 18:42:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-23 18:42:27,963 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2020-10-23 18:42:27,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:27,963 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-23 18:42:27,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-23 18:42:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:42:27,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:27,965 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] [2020-10-23 18:42:27,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:27,965 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:27,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:27,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1952199574, now seen corresponding path program 1 times [2020-10-23 18:42:27,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:27,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074974989] [2020-10-23 18:42:27,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:28,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:28,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074974989] [2020-10-23 18:42:28,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:28,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:42:28,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525477980] [2020-10-23 18:42:28,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:42:28,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:28,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:42:28,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:42:28,178 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-23 18:42:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:28,420 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-10-23 18:42:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:42:28,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-23 18:42:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:28,422 INFO L225 Difference]: With dead ends: 53 [2020-10-23 18:42:28,422 INFO L226 Difference]: Without dead ends: 38 [2020-10-23 18:42:28,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:42:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-23 18:42:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-23 18:42:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-23 18:42:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-23 18:42:28,434 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-23 18:42:28,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:28,435 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-23 18:42:28,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:42:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-23 18:42:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-23 18:42:28,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:28,436 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] [2020-10-23 18:42:28,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:42:28,437 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:28,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:28,438 INFO L82 PathProgramCache]: Analyzing trace with hash -856996485, now seen corresponding path program 1 times [2020-10-23 18:42:28,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:28,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845740975] [2020-10-23 18:42:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:28,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:28,533 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:28,592 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:28,592 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:28,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:42:28,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:28 BoogieIcfgContainer [2020-10-23 18:42:28,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:28,660 INFO L168 Benchmark]: Toolchain (without parser) took 2529.87 ms. Allocated memory is still 160.4 MB. Free memory was 136.2 MB in the beginning and 109.3 MB in the end (delta: 27.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:28,661 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:28,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.43 ms. Allocated memory is still 160.4 MB. Free memory was 135.7 MB in the beginning and 125.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:28,663 INFO L168 Benchmark]: Boogie Preprocessor took 45.83 ms. Allocated memory is still 160.4 MB. Free memory was 125.7 MB in the beginning and 123.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:28,664 INFO L168 Benchmark]: RCFGBuilder took 678.58 ms. Allocated memory is still 160.4 MB. Free memory was 123.9 MB in the beginning and 140.1 MB in the end (delta: -16.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:28,665 INFO L168 Benchmark]: TraceAbstraction took 1527.54 ms. Allocated memory is still 160.4 MB. Free memory was 139.6 MB in the beginning and 109.3 MB in the end (delta: 30.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:28,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.43 ms. Allocated memory is still 160.4 MB. Free memory was 135.7 MB in the beginning and 125.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.83 ms. Allocated memory is still 160.4 MB. Free memory was 125.7 MB in the beginning and 123.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 678.58 ms. Allocated memory is still 160.4 MB. Free memory was 123.9 MB in the beginning and 140.1 MB in the end (delta: -16.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1527.54 ms. Allocated memory is still 160.4 MB. Free memory was 139.6 MB in the beginning and 109.3 MB in the end (delta: 30.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L32] COND TRUE i