/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:41:34,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:41:34,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:41:34,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:41:34,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:41:34,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:41:34,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:41:34,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:41:34,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:41:34,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:41:34,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:41:34,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:41:34,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:41:34,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:41:34,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:41:34,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:41:34,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:41:34,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:41:34,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:41:34,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:41:34,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:41:34,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:41:34,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:41:34,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:41:34,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:41:34,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:41:34,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:41:34,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:41:34,090 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 [2020-07-21 01:41:34,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:41:34,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:41:34,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:41:34,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:41:34,124 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:41:34,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:41:34,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:41:34,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:41:34,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:41:34,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:41:34,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:41:34,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:41:34,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:41:34,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:41:34,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:41:34,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:41:34,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:41:34,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:41:34,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:41:34,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:41:34,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:41:34,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:41:34,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:41:34,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:41:34,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:41:34,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:41:34,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:34,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:41:34,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:41:34,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:41:34,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:41:34,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:41:34,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:41:34,601 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:41:34,601 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:41:34,602 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3f.c [2020-07-21 01:41:34,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44d4be37/10c7ee901a5845edaff9da16248afed8/FLAG05f0f6ba5 [2020-07-21 01:41:35,508 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:41:35,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3f.c [2020-07-21 01:41:35,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44d4be37/10c7ee901a5845edaff9da16248afed8/FLAG05f0f6ba5 [2020-07-21 01:41:35,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44d4be37/10c7ee901a5845edaff9da16248afed8 [2020-07-21 01:41:35,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:41:35,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:41:35,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:41:35,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:41:35,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:41:35,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:41:35" (1/1) ... [2020-07-21 01:41:35,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2723a77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35, skipping insertion in model container [2020-07-21 01:41:35,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:41:35" (1/1) ... [2020-07-21 01:41:35,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:41:35,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:41:35,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:41:35,929 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:41:35,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:41:35,994 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:41:35,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35 WrapperNode [2020-07-21 01:41:35,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:41:35,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:41:35,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:41:35,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:41:36,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35" (1/1) ... [2020-07-21 01:41:36,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35" (1/1) ... [2020-07-21 01:41:36,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35" (1/1) ... [2020-07-21 01:41:36,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35" (1/1) ... [2020-07-21 01:41:36,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35" (1/1) ... [2020-07-21 01:41:36,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35" (1/1) ... [2020-07-21 01:41:36,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35" (1/1) ... [2020-07-21 01:41:36,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:41:36,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:41:36,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:41:36,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:41:36,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35" (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 [2020-07-21 01:41:36,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:41:36,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:41:36,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 01:41:36,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 01:41:36,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:41:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:41:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 01:41:36,292 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 01:41:36,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 01:41:36,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:41:36,292 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 01:41:36,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:41:36,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 01:41:36,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 01:41:36,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:41:36,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:41:36,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:41:36,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:41:36,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:41:36,787 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:41:36,788 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 01:41:36,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:36 BoogieIcfgContainer [2020-07-21 01:41:36,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:41:36,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:41:36,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:41:36,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:41:36,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:41:35" (1/3) ... [2020-07-21 01:41:36,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9fc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:41:36, skipping insertion in model container [2020-07-21 01:41:36,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:35" (2/3) ... [2020-07-21 01:41:36,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9fc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:41:36, skipping insertion in model container [2020-07-21 01:41:36,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:36" (3/3) ... [2020-07-21 01:41:36,823 INFO L109 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-07-21 01:41:36,847 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:41:36,864 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:41:36,904 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:41:36,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:41:36,953 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:41:36,953 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:41:36,954 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:41:36,954 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:41:36,954 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:41:36,955 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:41:36,955 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:41:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-21 01:41:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 01:41:37,000 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:41:37,002 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] [2020-07-21 01:41:37,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:41:37,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:41:37,010 INFO L82 PathProgramCache]: Analyzing trace with hash -976607933, now seen corresponding path program 1 times [2020-07-21 01:41:37,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:41:37,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864063954] [2020-07-21 01:41:37,022 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:37,160 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:41:37,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:41:37,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:41:37,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:41:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:41:37,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:41:37,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864063954] [2020-07-21 01:41:37,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:41:37,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:41:37,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976445809] [2020-07-21 01:41:37,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:41:37,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:41:37,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:41:37,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:41:37,263 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-21 01:41:37,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:41:37,305 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-07-21 01:41:37,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:41:37,308 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-07-21 01:41:37,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:41:37,322 INFO L225 Difference]: With dead ends: 70 [2020-07-21 01:41:37,323 INFO L226 Difference]: Without dead ends: 33 [2020-07-21 01:41:37,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:41:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-21 01:41:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-21 01:41:37,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 01:41:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-07-21 01:41:37,389 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 27 [2020-07-21 01:41:37,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:41:37,390 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-07-21 01:41:37,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:41:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-07-21 01:41:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 01:41:37,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:41:37,393 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] [2020-07-21 01:41:37,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:37,596 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:41:37,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:41:37,597 INFO L82 PathProgramCache]: Analyzing trace with hash -714487667, now seen corresponding path program 1 times [2020-07-21 01:41:37,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:41:37,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943202829] [2020-07-21 01:41:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:37,687 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:41:37,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:41:37,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 01:41:37,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:41:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:41:37,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:41:37,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943202829] [2020-07-21 01:41:37,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:41:37,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 01:41:37,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817831251] [2020-07-21 01:41:37,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:41:37,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:41:37,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:41:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:41:37,771 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-07-21 01:41:37,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:41:37,944 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-07-21 01:41:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:41:37,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-21 01:41:37,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:41:37,947 INFO L225 Difference]: With dead ends: 61 [2020-07-21 01:41:37,947 INFO L226 Difference]: Without dead ends: 43 [2020-07-21 01:41:37,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:41:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-21 01:41:37,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-07-21 01:41:37,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-21 01:41:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-07-21 01:41:37,962 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-07-21 01:41:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:41:37,962 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-07-21 01:41:37,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:41:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-07-21 01:41:37,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 01:41:37,964 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:41:37,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:41:38,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:38,181 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:41:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:41:38,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1064141225, now seen corresponding path program 1 times [2020-07-21 01:41:38,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:41:38,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765417357] [2020-07-21 01:41:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:38,312 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:41:38,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 01:41:38,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:41:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 01:41:38,358 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:41:38,444 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 01:41:38,445 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 01:41:38,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:38,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:41:38 BoogieIcfgContainer [2020-07-21 01:41:38,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:41:38,726 INFO L168 Benchmark]: Toolchain (without parser) took 3165.77 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 101.4 MB in the beginning and 92.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 73.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:38,727 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 01:41:38,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.85 ms. Allocated memory is still 136.3 MB. Free memory was 101.0 MB in the beginning and 90.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:38,730 INFO L168 Benchmark]: Boogie Preprocessor took 195.25 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 90.3 MB in the beginning and 178.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:38,731 INFO L168 Benchmark]: RCFGBuilder took 608.62 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 158.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:38,733 INFO L168 Benchmark]: TraceAbstraction took 1916.86 ms. Allocated memory is still 200.8 MB. Free memory was 158.9 MB in the beginning and 92.4 MB in the end (delta: 66.5 MB). Peak memory consumption was 66.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:38,738 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 433.85 ms. Allocated memory is still 136.3 MB. Free memory was 101.0 MB in the beginning and 90.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 195.25 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 90.3 MB in the beginning and 178.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 608.62 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 158.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1916.86 ms. Allocated memory is still 200.8 MB. Free memory was 158.9 MB in the beginning and 92.4 MB in the end (delta: 66.5 MB). Peak memory consumption was 66.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=6, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i