/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:55:00,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:55:00,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:55:00,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:55:00,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:55:00,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:55:00,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:55:00,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:55:00,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:55:00,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:55:00,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:55:00,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:55:00,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:55:00,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:55:00,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:55:00,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:55:00,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:55:00,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:55:00,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:55:00,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:55:00,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:55:00,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:55:00,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:55:00,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:55:00,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:55:00,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:55:00,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:55:00,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:55:00,604 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 [2020-07-20 03:55:00,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:55:00,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:55:00,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:55:00,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:55:00,620 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:55:00,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:55:00,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:55:00,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:55:00,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:55:00,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:55:00,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:55:00,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:55:00,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:55:00,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:55:00,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:55:00,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:55:00,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:55:00,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:55:00,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:55:00,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:55:00,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:55:00,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:55:00,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:55:00,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:55:00,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:55:00,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:55:00,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:55:00,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:55:00,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:55:00,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:55:00,924 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:55:00,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:55:00,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:55:00,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:55:00,948 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:55:00,950 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-07-20 03:55:01,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ff480fb/90dd1d5e295c486e87c481bc439cc546/FLAG1aa9934ca [2020-07-20 03:55:01,565 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:55:01,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c [2020-07-20 03:55:01,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ff480fb/90dd1d5e295c486e87c481bc439cc546/FLAG1aa9934ca [2020-07-20 03:55:01,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ff480fb/90dd1d5e295c486e87c481bc439cc546 [2020-07-20 03:55:01,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:55:01,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:55:01,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:55:01,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:55:01,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:55:01,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:55:01" (1/1) ... [2020-07-20 03:55:01,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b4f20e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:01, skipping insertion in model container [2020-07-20 03:55:01,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:55:01" (1/1) ... [2020-07-20 03:55:01,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:55:01,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:55:02,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:55:02,193 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:55:02,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:55:02,229 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:55:02,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:02 WrapperNode [2020-07-20 03:55:02,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:55:02,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:55:02,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:55:02,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:55:02,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:02" (1/1) ... [2020-07-20 03:55:02,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:02" (1/1) ... [2020-07-20 03:55:02,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:02" (1/1) ... [2020-07-20 03:55:02,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:02" (1/1) ... [2020-07-20 03:55:02,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:02" (1/1) ... [2020-07-20 03:55:02,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:02" (1/1) ... [2020-07-20 03:55:02,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:02" (1/1) ... [2020-07-20 03:55:02,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:55:02,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:55:02,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:55:02,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:55:02,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:02" (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 [2020-07-20 03:55:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:55:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:55:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 03:55:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 03:55:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:55:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:55:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 03:55:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 03:55:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 03:55:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:55:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 03:55:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:55:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:55:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 03:55:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:55:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:55:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:55:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:55:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:55:02,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:55:02,807 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 03:55:02,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:55:02 BoogieIcfgContainer [2020-07-20 03:55:02,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:55:02,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:55:02,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:55:02,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:55:02,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:55:01" (1/3) ... [2020-07-20 03:55:02,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f372f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:55:02, skipping insertion in model container [2020-07-20 03:55:02,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:55:02" (2/3) ... [2020-07-20 03:55:02,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f372f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:55:02, skipping insertion in model container [2020-07-20 03:55:02,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:55:02" (3/3) ... [2020-07-20 03:55:02,823 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-07-20 03:55:02,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:55:02,846 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:55:02,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:55:02,893 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:55:02,893 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:55:02,893 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:55:02,893 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:55:02,894 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:55:02,894 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:55:02,894 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:55:02,894 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:55:02,912 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-20 03:55:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:55:02,918 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:02,919 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] [2020-07-20 03:55:02,920 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:02,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:02,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-07-20 03:55:02,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:02,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896487856] [2020-07-20 03:55:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20d19402 [2020-07-20 03:55:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:55:03,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896487856] [2020-07-20 03:55:03,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:55:03,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:55:03,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785141845] [2020-07-20 03:55:03,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:55:03,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:55:03,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:55:03,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:55:03,189 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-07-20 03:55:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:55:03,309 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-20 03:55:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:55:03,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 03:55:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:55:03,323 INFO L225 Difference]: With dead ends: 56 [2020-07-20 03:55:03,324 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 03:55:03,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:55:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 03:55:03,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-20 03:55:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-20 03:55:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-20 03:55:03,382 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-07-20 03:55:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:55:03,383 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-20 03:55:03,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:55:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-20 03:55:03,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:55:03,385 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:03,386 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] [2020-07-20 03:55:03,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:55:03,387 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:03,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:03,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-07-20 03:55:03,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:03,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896887026] [2020-07-20 03:55:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20d19402 [2020-07-20 03:55:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:55:03,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896887026] [2020-07-20 03:55:03,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:55:03,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:55:03,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994482270] [2020-07-20 03:55:03,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:55:03,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:55:03,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:55:03,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:55:03,596 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-07-20 03:55:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:55:03,756 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-07-20 03:55:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:55:03,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-20 03:55:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:55:03,758 INFO L225 Difference]: With dead ends: 45 [2020-07-20 03:55:03,758 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 03:55:03,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:55:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 03:55:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-20 03:55:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 03:55:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-20 03:55:03,769 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-07-20 03:55:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:55:03,770 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-20 03:55:03,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:55:03,770 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-20 03:55:03,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 03:55:03,771 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:03,771 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] [2020-07-20 03:55:03,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:55:03,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:03,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:03,773 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-07-20 03:55:03,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:03,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351115880] [2020-07-20 03:55:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20d19402 [2020-07-20 03:55:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 03:55:04,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351115880] [2020-07-20 03:55:04,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:55:04,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 03:55:04,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654791433] [2020-07-20 03:55:04,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 03:55:04,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:55:04,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 03:55:04,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 03:55:04,010 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-07-20 03:55:04,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:55:04,307 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-07-20 03:55:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 03:55:04,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-07-20 03:55:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:55:04,309 INFO L225 Difference]: With dead ends: 39 [2020-07-20 03:55:04,309 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 03:55:04,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-07-20 03:55:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 03:55:04,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-07-20 03:55:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 03:55:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-20 03:55:04,318 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-07-20 03:55:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:55:04,319 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-20 03:55:04,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 03:55:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-20 03:55:04,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 03:55:04,321 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:04,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-07-20 03:55:04,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:55:04,322 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:04,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:04,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1239476407, now seen corresponding path program 1 times [2020-07-20 03:55:04,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:04,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649500579] [2020-07-20 03:55:04,323 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20d19402 [2020-07-20 03:55:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:55:04,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649500579] [2020-07-20 03:55:04,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638882058] [2020-07-20 03:55:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f81494c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:55:04,605 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f81494c issued 4 check-sat command(s) [2020-07-20 03:55:04,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:55:04,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 03:55:04,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:55:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:55:04,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:55:04,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-07-20 03:55:04,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977563916] [2020-07-20 03:55:04,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 03:55:04,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:55:04,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 03:55:04,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-20 03:55:04,706 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2020-07-20 03:55:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:55:04,917 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-07-20 03:55:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 03:55:04,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-07-20 03:55:04,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:55:04,920 INFO L225 Difference]: With dead ends: 55 [2020-07-20 03:55:04,920 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 03:55:04,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-20 03:55:04,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 03:55:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-07-20 03:55:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 03:55:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-07-20 03:55:04,929 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 30 [2020-07-20 03:55:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:55:04,929 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-07-20 03:55:04,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 03:55:04,930 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-07-20 03:55:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 03:55:04,931 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:04,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-07-20 03:55:05,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:55:05,146 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:05,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:05,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1492634651, now seen corresponding path program 1 times [2020-07-20 03:55:05,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:05,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781734449] [2020-07-20 03:55:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20d19402 [2020-07-20 03:55:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:55:05,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781734449] [2020-07-20 03:55:05,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74511842] [2020-07-20 03:55:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@11fb6cf2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:55:05,617 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@11fb6cf2 issued 4 check-sat command(s) [2020-07-20 03:55:05,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:55:05,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-20 03:55:05,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:55:05,762 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 03:55:05,764 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:55:05,777 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:55:05,779 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:55:05,779 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-07-20 03:55:05,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:55:05,862 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-07-20 03:55:05,864 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:55:05,875 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:55:05,875 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:55:05,876 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-07-20 03:55:05,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:55:05,968 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2020-07-20 03:55:05,971 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:55:05,984 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:55:05,986 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 03:55:05,986 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:48, output treesize:29 [2020-07-20 03:55:06,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:55:06,058 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2020-07-20 03:55:06,059 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:55:06,066 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:55:06,067 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:55:06,068 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:36, output treesize:7 [2020-07-20 03:55:06,101 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:55:06,106 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:55:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:55:06,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:55:06,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2020-07-20 03:55:06,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266631292] [2020-07-20 03:55:06,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 03:55:06,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:55:06,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 03:55:06,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-07-20 03:55:06,164 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 23 states. [2020-07-20 03:55:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:55:06,689 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-07-20 03:55:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 03:55:06,690 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 33 [2020-07-20 03:55:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:55:06,692 INFO L225 Difference]: With dead ends: 64 [2020-07-20 03:55:06,692 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 03:55:06,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2020-07-20 03:55:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 03:55:06,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-07-20 03:55:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 03:55:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-07-20 03:55:06,701 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 33 [2020-07-20 03:55:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:55:06,702 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-07-20 03:55:06,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 03:55:06,703 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-07-20 03:55:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 03:55:06,704 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:06,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:55:06,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:55:06,919 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:06,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:06,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2145280396, now seen corresponding path program 2 times [2020-07-20 03:55:06,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:06,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073306765] [2020-07-20 03:55:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20d19402 [2020-07-20 03:55:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:55:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:55:07,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073306765] [2020-07-20 03:55:07,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735798427] [2020-07-20 03:55:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@66ab2688 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:55:07,126 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@66ab2688 issued 4 check-sat command(s) [2020-07-20 03:55:07,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:55:07,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 03:55:07,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:55:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:55:07,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:55:07,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2020-07-20 03:55:07,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521757116] [2020-07-20 03:55:07,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 03:55:07,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:55:07,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 03:55:07,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-07-20 03:55:07,235 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 14 states. [2020-07-20 03:55:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:55:07,482 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2020-07-20 03:55:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 03:55:07,482 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-07-20 03:55:07,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:55:07,485 INFO L225 Difference]: With dead ends: 66 [2020-07-20 03:55:07,485 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 03:55:07,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-07-20 03:55:07,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 03:55:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-07-20 03:55:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 03:55:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-07-20 03:55:07,494 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 36 [2020-07-20 03:55:07,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:55:07,494 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-07-20 03:55:07,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 03:55:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-07-20 03:55:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-20 03:55:07,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:55:07,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:55:07,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:55:07,711 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:55:07,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:55:07,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1680039082, now seen corresponding path program 3 times [2020-07-20 03:55:07,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:55:07,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625350954] [2020-07-20 03:55:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20d19402 [2020-07-20 03:55:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:55:07,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:55:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:55:07,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:55:07,794 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:55:07,795 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:55:07,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 03:55:07,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:55:07 BoogieIcfgContainer [2020-07-20 03:55:07,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:55:07,846 INFO L168 Benchmark]: Toolchain (without parser) took 5892.66 ms. Allocated memory was 137.4 MB in the beginning and 251.7 MB in the end (delta: 114.3 MB). Free memory was 100.8 MB in the beginning and 174.2 MB in the end (delta: -73.4 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:55:07,847 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 137.4 MB. Free memory is still 119.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 03:55:07,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.35 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 90.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-20 03:55:07,849 INFO L168 Benchmark]: Boogie Preprocessor took 158.13 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.1 MB in the beginning and 178.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:55:07,849 INFO L168 Benchmark]: RCFGBuilder took 423.73 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 161.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-07-20 03:55:07,850 INFO L168 Benchmark]: TraceAbstraction took 5030.47 ms. Allocated memory was 201.3 MB in the beginning and 251.7 MB in the end (delta: 50.3 MB). Free memory was 160.9 MB in the beginning and 174.2 MB in the end (delta: -13.4 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:55:07,854 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 137.4 MB. Free memory is still 119.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.35 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 90.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.13 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.1 MB in the beginning and 178.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.73 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 161.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5030.47 ms. Allocated memory was 201.3 MB in the beginning and 251.7 MB in the end (delta: 50.3 MB). Free memory was 160.9 MB in the beginning and 174.2 MB in the end (delta: -13.4 MB). Peak memory consumption was 37.0 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)=22, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=3] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=3] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=3] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=3] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=3, sum={2:0}] [L29] COND TRUE i