/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/modpf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:28:18,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:28:18,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:28:18,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:28:18,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:28:18,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:28:18,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:28:18,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:28:18,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:28:18,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:28:18,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:28:18,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:28:18,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:28:18,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:28:18,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:28:18,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:28:18,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:28:18,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:28:18,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:28:18,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:28:18,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:28:18,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:28:18,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:28:18,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:28:18,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:28:18,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:28:18,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:28:18,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:28:18,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:28:18,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:28:18,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:28:18,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:28:18,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:28:18,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:28:18,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:28:18,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:28:18,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:28:18,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:28:18,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:28:18,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:28:18,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:28:18,132 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:28:18,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:28:18,133 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:28:18,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:28:18,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:28:18,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:28:18,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:28:18,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:28:18,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:28:18,134 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:28:18,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:28:18,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:28:18,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:28:18,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:28:18,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:28:18,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:28:18,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:28:18,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:28:18,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:28:18,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:28:18,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:28:18,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:28:18,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:28:18,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:28:18,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:28:18,137 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:28:18,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:28:18,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:28:18,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:28:18,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:28:18,687 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:28:18,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modpf.c [2020-09-21 10:28:18,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc10ce3e/0ae08847ce24494bad0bf453f8746611/FLAGf3aa77062 [2020-09-21 10:28:19,290 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:28:19,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modpf.c [2020-09-21 10:28:19,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc10ce3e/0ae08847ce24494bad0bf453f8746611/FLAGf3aa77062 [2020-09-21 10:28:19,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc10ce3e/0ae08847ce24494bad0bf453f8746611 [2020-09-21 10:28:19,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:28:19,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:28:19,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:19,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:28:19,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:28:19,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:19" (1/1) ... [2020-09-21 10:28:19,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:19, skipping insertion in model container [2020-09-21 10:28:19,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:19" (1/1) ... [2020-09-21 10:28:19,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:28:19,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:28:20,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:20,037 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:28:20,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:20,085 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:28:20,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:20 WrapperNode [2020-09-21 10:28:20,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:20,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:28:20,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:28:20,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:28:20,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:20" (1/1) ... [2020-09-21 10:28:20,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:20" (1/1) ... [2020-09-21 10:28:20,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:20" (1/1) ... [2020-09-21 10:28:20,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:20" (1/1) ... [2020-09-21 10:28:20,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:20" (1/1) ... [2020-09-21 10:28:20,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:20" (1/1) ... [2020-09-21 10:28:20,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:20" (1/1) ... [2020-09-21 10:28:20,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:28:20,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:28:20,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:28:20,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:28:20,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 10:28:20,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:28:20,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:28:20,297 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:28:20,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:28:20,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:28:20,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:28:20,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:28:20,298 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:28:20,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:28:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:28:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:28:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:28:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:28:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:28:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:28:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:28:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:28:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:28:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:28:20,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:28:20,613 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-21 10:28:20,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:20 BoogieIcfgContainer [2020-09-21 10:28:20,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:28:20,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:28:20,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:28:20,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:28:20,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:28:19" (1/3) ... [2020-09-21 10:28:20,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0de9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:20, skipping insertion in model container [2020-09-21 10:28:20,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:20" (2/3) ... [2020-09-21 10:28:20,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0de9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:20, skipping insertion in model container [2020-09-21 10:28:20,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:20" (3/3) ... [2020-09-21 10:28:20,627 INFO L109 eAbstractionObserver]: Analyzing ICFG modpf.c [2020-09-21 10:28:20,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:28:20,648 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:28:20,672 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:28:20,707 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:28:20,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:28:20,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:28:20,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:28:20,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:28:20,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:28:20,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:28:20,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:28:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-21 10:28:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 10:28:20,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:20,736 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] [2020-09-21 10:28:20,736 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:20,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:20,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-09-21 10:28:20,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:20,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213732817] [2020-09-21 10:28:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:20,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:21,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213732817] [2020-09-21 10:28:21,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:21,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:28:21,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220856290] [2020-09-21 10:28:21,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:28:21,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:21,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:28:21,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:21,054 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-09-21 10:28:21,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:21,205 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-09-21 10:28:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:28:21,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 10:28:21,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:21,219 INFO L225 Difference]: With dead ends: 58 [2020-09-21 10:28:21,219 INFO L226 Difference]: Without dead ends: 29 [2020-09-21 10:28:21,224 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 [2020-09-21 10:28:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-21 10:28:21,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-21 10:28:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-21 10:28:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-09-21 10:28:21,271 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-09-21 10:28:21,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:21,272 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-09-21 10:28:21,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:28:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-09-21 10:28:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 10:28:21,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:21,273 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] [2020-09-21 10:28:21,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:28:21,274 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:21,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:21,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-09-21 10:28:21,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:21,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115517423] [2020-09-21 10:28:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:21,302 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-21 10:28:21,302 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-21 10:28:21,302 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:28:21,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:28:21,327 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 10:28:21,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:28:21 BoogieIcfgContainer [2020-09-21 10:28:21,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:28:21,330 INFO L168 Benchmark]: Toolchain (without parser) took 1674.47 ms. Allocated memory was 136.8 MB in the beginning and 198.7 MB in the end (delta: 61.9 MB). Free memory was 100.0 MB in the beginning and 127.3 MB in the end (delta: -27.3 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:21,332 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 10:28:21,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.82 ms. Allocated memory is still 136.8 MB. Free memory was 99.3 MB in the beginning and 88.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:21,334 INFO L168 Benchmark]: Boogie Preprocessor took 130.61 ms. Allocated memory was 136.8 MB in the beginning and 198.7 MB in the end (delta: 61.9 MB). Free memory was 88.5 MB in the beginning and 176.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:21,335 INFO L168 Benchmark]: RCFGBuilder took 400.28 ms. Allocated memory is still 198.7 MB. Free memory was 176.3 MB in the beginning and 158.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:21,336 INFO L168 Benchmark]: TraceAbstraction took 708.57 ms. Allocated memory is still 198.7 MB. Free memory was 158.1 MB in the beginning and 127.3 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:21,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 426.82 ms. Allocated memory is still 136.8 MB. Free memory was 99.3 MB in the beginning and 88.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.61 ms. Allocated memory was 136.8 MB in the beginning and 198.7 MB in the end (delta: 61.9 MB). Free memory was 88.5 MB in the beginning and 176.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 400.28 ms. Allocated memory is still 198.7 MB. Free memory was 176.3 MB in the beginning and 158.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 708.57 ms. Allocated memory is still 198.7 MB. Free memory was 158.1 MB in the beginning and 127.3 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND FALSE !(i