/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 NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:41:47,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:41:47,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:41:47,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:41:47,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:41:47,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:41:47,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:41:47,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:41:47,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:41:47,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:41:47,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:41:47,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:41:47,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:41:47,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:41:47,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:41:47,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:41:47,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:41:47,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:41:47,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:41:47,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:41:47,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:41:47,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:41:47,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:41:47,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:41:47,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:41:47,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:41:47,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:41:47,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:41:47,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:41:47,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:41:47,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:41:47,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:41:47,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:41:47,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:41:47,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:41:47,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:41:47,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:41:47,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:41:47,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:41:47,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:41:47,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:41:47,124 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 16:41:47,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:41:47,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:41:47,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:41:47,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:41:47,140 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:41:47,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:41:47,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:41:47,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:41:47,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:41:47,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:41:47,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:41:47,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:41:47,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:41:47,142 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:41:47,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:41:47,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:41:47,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:41:47,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:41:47,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:41:47,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:41:47,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:41:47,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:41:47,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:41:47,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:41:47,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:41:47,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:41:47,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:47,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:41:47,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:41:47,145 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 -> NUM_VARIABLES 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 -> 2 [2020-07-21 16:41:47,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:41:47,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:41:47,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:41:47,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:41:47,469 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:41:47,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifncompf.c [2020-07-21 16:41:47,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d58d5bab/6ed591f2ed624e14992f85c5e96ca564/FLAGbb596c72a [2020-07-21 16:41:48,055 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:41:48,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifncompf.c [2020-07-21 16:41:48,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d58d5bab/6ed591f2ed624e14992f85c5e96ca564/FLAGbb596c72a [2020-07-21 16:41:48,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d58d5bab/6ed591f2ed624e14992f85c5e96ca564 [2020-07-21 16:41:48,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:41:48,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:41:48,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:41:48,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:41:48,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:41:48,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:41:48" (1/1) ... [2020-07-21 16:41:48,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ebf14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48, skipping insertion in model container [2020-07-21 16:41:48,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:41:48" (1/1) ... [2020-07-21 16:41:48,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:41:48,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:41:48,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:41:48,639 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:41:48,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:41:48,680 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:41:48,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48 WrapperNode [2020-07-21 16:41:48,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:41:48,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:41:48,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:41:48,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:41:48,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48" (1/1) ... [2020-07-21 16:41:48,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48" (1/1) ... [2020-07-21 16:41:48,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48" (1/1) ... [2020-07-21 16:41:48,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48" (1/1) ... [2020-07-21 16:41:48,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48" (1/1) ... [2020-07-21 16:41:48,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48" (1/1) ... [2020-07-21 16:41:48,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48" (1/1) ... [2020-07-21 16:41:48,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:41:48,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:41:48,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:41:48,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:41:48,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48" (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 16:41:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:41:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:41:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 16:41:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 16:41:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:41:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:41:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:41:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 16:41:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 16:41:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:41:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:41:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:41:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:41:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:41:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:41:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:41:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:41:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:41:49,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:41:49,241 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 16:41:49,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:49 BoogieIcfgContainer [2020-07-21 16:41:49,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:41:49,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:41:49,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:41:49,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:41:49,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:41:48" (1/3) ... [2020-07-21 16:41:49,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3751903b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:41:49, skipping insertion in model container [2020-07-21 16:41:49,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:48" (2/3) ... [2020-07-21 16:41:49,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3751903b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:41:49, skipping insertion in model container [2020-07-21 16:41:49,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:49" (3/3) ... [2020-07-21 16:41:49,254 INFO L109 eAbstractionObserver]: Analyzing ICFG ifncompf.c [2020-07-21 16:41:49,265 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:41:49,272 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:41:49,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:41:49,319 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:41:49,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:41:49,319 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:41:49,319 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:41:49,320 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:41:49,320 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:41:49,320 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:41:49,320 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:41:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-21 16:41:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 16:41:49,349 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:49,350 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] [2020-07-21 16:41:49,350 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:49,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:49,356 INFO L82 PathProgramCache]: Analyzing trace with hash -794599326, now seen corresponding path program 1 times [2020-07-21 16:41:49,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:49,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490180457] [2020-07-21 16:41:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:41:49,483 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:41:49,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:41:49,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:41:49,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:41:49,520 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 16:41:49,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:41:49,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490180457] [2020-07-21 16:41:49,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:41:49,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:41:49,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287068906] [2020-07-21 16:41:49,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:41:49,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:41:49,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:41:49,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:41:49,547 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-21 16:41:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:41:49,576 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-07-21 16:41:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:41:49,578 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-21 16:41:49,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:41:49,588 INFO L225 Difference]: With dead ends: 70 [2020-07-21 16:41:49,588 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 16:41:49,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 16:41:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 16:41:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-21 16:41:49,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 16:41:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-07-21 16:41:49,636 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2020-07-21 16:41:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:41:49,637 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-07-21 16:41:49,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:41:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-07-21 16:41:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 16:41:49,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:49,639 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] [2020-07-21 16:41:49,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:49,855 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:49,856 INFO L82 PathProgramCache]: Analyzing trace with hash -544938994, now seen corresponding path program 1 times [2020-07-21 16:41:49,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:49,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301947983] [2020-07-21 16:41:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:41:49,952 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:41:49,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:41:49,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:41:49,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:41:50,030 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 16:41:50,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:41:50,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301947983] [2020-07-21 16:41:50,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:41:50,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:41:50,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354385009] [2020-07-21 16:41:50,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:41:50,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:41:50,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:41:50,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:41:50,036 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 4 states. [2020-07-21 16:41:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:41:50,154 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2020-07-21 16:41:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:41:50,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-21 16:41:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:41:50,158 INFO L225 Difference]: With dead ends: 67 [2020-07-21 16:41:50,158 INFO L226 Difference]: Without dead ends: 48 [2020-07-21 16:41:50,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 16:41:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-21 16:41:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2020-07-21 16:41:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-21 16:41:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-07-21 16:41:50,174 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 24 [2020-07-21 16:41:50,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:41:50,175 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-07-21 16:41:50,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:41:50,175 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-07-21 16:41:50,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 16:41:50,177 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:50,177 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] [2020-07-21 16:41:50,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:50,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:50,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:50,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1796917477, now seen corresponding path program 1 times [2020-07-21 16:41:50,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:50,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214053229] [2020-07-21 16:41:50,395 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:41:50,461 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:41:50,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:41:50,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:41:50,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:41:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 16:41:50,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:41:50,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214053229] [2020-07-21 16:41:50,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:41:50,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:41:50,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88017474] [2020-07-21 16:41:50,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:41:50,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:41:50,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:41:50,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:41:50,500 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 3 states. [2020-07-21 16:41:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:41:50,588 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-07-21 16:41:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:41:50,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-21 16:41:50,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:41:50,603 INFO L225 Difference]: With dead ends: 72 [2020-07-21 16:41:50,603 INFO L226 Difference]: Without dead ends: 48 [2020-07-21 16:41:50,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:41:50,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-21 16:41:50,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2020-07-21 16:41:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 16:41:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-07-21 16:41:50,616 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 33 [2020-07-21 16:41:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:41:50,617 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-07-21 16:41:50,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:41:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-07-21 16:41:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 16:41:50,618 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:50,618 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] [2020-07-21 16:41:50,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:50,820 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:50,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:50,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1817991449, now seen corresponding path program 1 times [2020-07-21 16:41:50,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:50,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083965057] [2020-07-21 16:41:50,822 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:50,887 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:41:50,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:41:50,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:41:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:41:50,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:41:50,959 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:41:50,959 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:41:51,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:51,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:41:51 BoogieIcfgContainer [2020-07-21 16:41:51,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:41:51,230 INFO L168 Benchmark]: Toolchain (without parser) took 2809.02 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 101.8 MB in the beginning and 185.1 MB in the end (delta: -83.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:51,231 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:41:51,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.37 ms. Allocated memory is still 137.4 MB. Free memory was 101.3 MB in the beginning and 90.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:51,233 INFO L168 Benchmark]: Boogie Preprocessor took 129.98 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.3 MB in the beginning and 178.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:51,235 INFO L168 Benchmark]: RCFGBuilder took 434.02 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 159.6 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:51,236 INFO L168 Benchmark]: TraceAbstraction took 1980.52 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 159.6 MB in the beginning and 185.1 MB in the end (delta: -25.5 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:51,240 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.37 ms. Allocated memory is still 137.4 MB. Free memory was 101.3 MB in the beginning and 90.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.98 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.3 MB in the beginning and 178.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.02 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 159.6 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1980.52 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 159.6 MB in the beginning and 185.1 MB in the end (delta: -25.5 MB). Peak memory consumption was 6.0 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)=2, 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, c={-3:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-3:0}, N=1] [L30] COND TRUE i