/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:59:56,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:59:56,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:59:56,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:59:56,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:59:56,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:59:56,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:59:56,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:59:56,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:59:56,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:59:56,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:59:56,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:59:56,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:59:56,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:59:56,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:59:56,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:59:56,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:59:56,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:59:56,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:59:56,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:59:56,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:59:56,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:59:56,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:59:56,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:59:56,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:59:56,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:59:56,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:59:56,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:59:56,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:59:56,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 17:59:56,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:59:56,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:59:56,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:59:56,513 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 [2020-08-18 17:59:56,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:59:56,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:59:56,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:59:56,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:59:56,565 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:59:56,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:59:56,565 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:59:56,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:59:56,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:59:56,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:59:56,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:59:56,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:59:56,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:59:56,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:59:56,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:59:56,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:59:56,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:59:56,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:59:56,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:59:56,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:59:56,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:59:56,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:59:56,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:59:56,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:59:56,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:59:56,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:59:56,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:59:56,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:59:56,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:59:56,576 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:59:56,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:59:56,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:59:56,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:59:56,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:59:56,882 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:59:56,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn3f.c [2020-08-18 17:59:56,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0eda85c/3e3b82da23c942388ce2632ad2a7fc5a/FLAG7e8e3612c [2020-08-18 17:59:57,400 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:59:57,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/eqn3f.c [2020-08-18 17:59:57,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0eda85c/3e3b82da23c942388ce2632ad2a7fc5a/FLAG7e8e3612c [2020-08-18 17:59:57,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0eda85c/3e3b82da23c942388ce2632ad2a7fc5a [2020-08-18 17:59:57,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:59:57,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:59:57,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:59:57,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:59:57,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:59:57,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:59:57" (1/1) ... [2020-08-18 17:59:57,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c286c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:57, skipping insertion in model container [2020-08-18 17:59:57,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:59:57" (1/1) ... [2020-08-18 17:59:57,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:59:57,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:59:58,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:59:58,057 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:59:58,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:59:58,097 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:59:58,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58 WrapperNode [2020-08-18 17:59:58,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:59:58,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:59:58,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:59:58,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:59:58,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58" (1/1) ... [2020-08-18 17:59:58,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58" (1/1) ... [2020-08-18 17:59:58,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58" (1/1) ... [2020-08-18 17:59:58,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58" (1/1) ... [2020-08-18 17:59:58,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58" (1/1) ... [2020-08-18 17:59:58,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58" (1/1) ... [2020-08-18 17:59:58,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58" (1/1) ... [2020-08-18 17:59:58,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:59:58,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:59:58,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:59:58,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:59:58,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58" (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 [2020-08-18 17:59:58,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:59:58,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:59:58,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 17:59:58,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 17:59:58,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:59:58,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:59:58,290 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 17:59:58,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 17:59:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 17:59:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:59:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:59:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:59:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:59:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:59:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:59:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:59:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:59:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:59:58,610 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:59:58,610 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 17:59:58,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:59:58 BoogieIcfgContainer [2020-08-18 17:59:58,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:59:58,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:59:58,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:59:58,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:59:58,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:59:57" (1/3) ... [2020-08-18 17:59:58,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db412fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:59:58, skipping insertion in model container [2020-08-18 17:59:58,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:59:58" (2/3) ... [2020-08-18 17:59:58,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db412fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:59:58, skipping insertion in model container [2020-08-18 17:59:58,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:59:58" (3/3) ... [2020-08-18 17:59:58,623 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2020-08-18 17:59:58,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:59:58,653 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:59:58,673 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:59:58,694 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:59:58,694 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:59:58,694 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:59:58,694 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:59:58,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:59:58,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:59:58,695 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:59:58,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:59:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-18 17:59:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 17:59:58,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:59:58,722 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] [2020-08-18 17:59:58,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:59:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:59:58,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-18 17:59:58,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:59:58,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770553821] [2020-08-18 17:59:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:59:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:59:58,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:59:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:59:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:59:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:59:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:59:58,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770553821] [2020-08-18 17:59:58,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:59:58,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 17:59:58,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636657517] [2020-08-18 17:59:58,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 17:59:58,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:59:58,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 17:59:58,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:59:58,973 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-18 17:59:59,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:59:59,083 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-18 17:59:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 17:59:59,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-18 17:59:59,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:59:59,096 INFO L225 Difference]: With dead ends: 58 [2020-08-18 17:59:59,096 INFO L226 Difference]: Without dead ends: 29 [2020-08-18 17:59:59,100 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 [2020-08-18 17:59:59,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-18 17:59:59,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-18 17:59:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 17:59:59,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-18 17:59:59,149 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-18 17:59:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:59:59,149 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-18 17:59:59,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 17:59:59,150 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-18 17:59:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 17:59:59,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:59:59,151 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] [2020-08-18 17:59:59,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:59:59,152 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:59:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:59:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-18 17:59:59,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:59:59,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679163560] [2020-08-18 17:59:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:59:59,181 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 17:59:59,181 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 17:59:59,181 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:59:59,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:59:59,201 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 17:59:59,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:59:59 BoogieIcfgContainer [2020-08-18 17:59:59,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:59:59,205 INFO L168 Benchmark]: Toolchain (without parser) took 1383.45 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 132.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-08-18 17:59:59,206 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:59:59,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.39 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 92.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-18 17:59:59,208 INFO L168 Benchmark]: Boogie Preprocessor took 129.32 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 180.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-18 17:59:59,209 INFO L168 Benchmark]: RCFGBuilder took 386.67 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 163.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-08-18 17:59:59,210 INFO L168 Benchmark]: TraceAbstraction took 585.84 ms. Allocated memory is still 203.4 MB. Free memory was 163.3 MB in the beginning and 132.2 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-08-18 17:59:59,215 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.39 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 92.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.32 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 180.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 386.67 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 163.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 585.84 ms. Allocated memory is still 203.4 MB. Free memory was 163.3 MB in the beginning and 132.2 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 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] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 6 [L30] b[0] = 10 [L32] i=1 [L32] COND FALSE !(i