/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/s1iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:16:07,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:16:07,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:16:07,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:16:07,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:16:07,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:16:07,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:16:07,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:16:07,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:16:07,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:16:07,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:16:07,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:16:07,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:16:07,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:16:07,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:16:07,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:16:07,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:16:07,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:16:07,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:16:07,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:16:07,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:16:07,714 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:16:07,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:16:07,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:16:07,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:16:07,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:16:07,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:16:07,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:16:07,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:16:07,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:16:07,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:16:07,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:16:07,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:16:07,716 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:16:07,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:16:07,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:16:07,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:07,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:16:07,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:16:07,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:16:07,717 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:16:08,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:16:08,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:16:08,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:16:08,123 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:16:08,123 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:16:08,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2021-02-24 00:16:08,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43288a630/d3470147fb78474f8902525741454418/FLAG4761396ae [2021-02-24 00:16:08,814 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:16:08,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1iff.c [2021-02-24 00:16:08,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43288a630/d3470147fb78474f8902525741454418/FLAG4761396ae [2021-02-24 00:16:09,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43288a630/d3470147fb78474f8902525741454418 [2021-02-24 00:16:09,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:16:09,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:16:09,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:09,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:16:09,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:16:09,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:09" (1/1) ... [2021-02-24 00:16:09,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7358e60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09, skipping insertion in model container [2021-02-24 00:16:09,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:09" (1/1) ... [2021-02-24 00:16:09,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:16:09,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:16:09,413 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1iff.c[588,601] [2021-02-24 00:16:09,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:09,455 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:16:09,473 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1iff.c[588,601] [2021-02-24 00:16:09,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:09,530 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:16:09,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09 WrapperNode [2021-02-24 00:16:09,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:09,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:16:09,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:16:09,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:16:09,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09" (1/1) ... [2021-02-24 00:16:09,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09" (1/1) ... [2021-02-24 00:16:09,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09" (1/1) ... [2021-02-24 00:16:09,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09" (1/1) ... [2021-02-24 00:16:09,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09" (1/1) ... [2021-02-24 00:16:09,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09" (1/1) ... [2021-02-24 00:16:09,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09" (1/1) ... [2021-02-24 00:16:09,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:16:09,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:16:09,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:16:09,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:16:09,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09" (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 [2021-02-24 00:16:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:16:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:16:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:16:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:16:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:16:09,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:16:09,743 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:16:09,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:16:09,743 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:16:09,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:16:09,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:16:09,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:16:09,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:16:09,744 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:16:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:16:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:16:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:16:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:16:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:16:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:16:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:16:09,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:16:10,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:16:10,298 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 00:16:10,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:10 BoogieIcfgContainer [2021-02-24 00:16:10,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:16:10,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:16:10,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:16:10,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:16:10,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:16:09" (1/3) ... [2021-02-24 00:16:10,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f6231b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:10, skipping insertion in model container [2021-02-24 00:16:10,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:09" (2/3) ... [2021-02-24 00:16:10,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f6231b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:10, skipping insertion in model container [2021-02-24 00:16:10,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:10" (3/3) ... [2021-02-24 00:16:10,309 INFO L111 eAbstractionObserver]: Analyzing ICFG s1iff.c [2021-02-24 00:16:10,317 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:16:10,322 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:16:10,341 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:16:10,366 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:16:10,366 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:16:10,366 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:16:10,367 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:16:10,367 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:16:10,367 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:16:10,367 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:16:10,367 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:16:10,384 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-24 00:16:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:16:10,395 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:10,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:10,397 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:10,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:10,403 INFO L82 PathProgramCache]: Analyzing trace with hash 137751759, now seen corresponding path program 1 times [2021-02-24 00:16:10,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:10,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226711070] [2021-02-24 00:16:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:10,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:10,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:10,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:10,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:10,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:10,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:10,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:10,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:10,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226711070] [2021-02-24 00:16:10,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:10,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:16:10,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173122039] [2021-02-24 00:16:10,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:16:10,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:10,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:16:10,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:10,789 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-24 00:16:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:10,997 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-02-24 00:16:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:16:10,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-24 00:16:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:11,008 INFO L225 Difference]: With dead ends: 119 [2021-02-24 00:16:11,008 INFO L226 Difference]: Without dead ends: 58 [2021-02-24 00:16:11,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:11,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-24 00:16:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-24 00:16:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-24 00:16:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-02-24 00:16:11,067 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 36 [2021-02-24 00:16:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:11,068 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-02-24 00:16:11,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:16:11,069 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-02-24 00:16:11,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:16:11,071 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:11,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:11,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:11,072 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:11,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:11,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1632327928, now seen corresponding path program 1 times [2021-02-24 00:16:11,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:11,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836660070] [2021-02-24 00:16:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:11,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:11,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:11,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:11,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:11,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:11,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:16:11,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:11,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:11,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:11,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:11,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:11,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:11,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:11,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:11,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836660070] [2021-02-24 00:16:11,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:11,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:16:11,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873541847] [2021-02-24 00:16:11,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:16:11,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:11,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:16:11,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:16:11,257 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2021-02-24 00:16:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:11,517 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-02-24 00:16:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:16:11,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-24 00:16:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:11,526 INFO L225 Difference]: With dead ends: 104 [2021-02-24 00:16:11,527 INFO L226 Difference]: Without dead ends: 79 [2021-02-24 00:16:11,529 INFO L677 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 [2021-02-24 00:16:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-24 00:16:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2021-02-24 00:16:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 00:16:11,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-24 00:16:11,569 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 36 [2021-02-24 00:16:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:11,571 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-24 00:16:11,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:16:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-24 00:16:11,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 00:16:11,576 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:11,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:11,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:11,577 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:11,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:11,578 INFO L82 PathProgramCache]: Analyzing trace with hash -881259695, now seen corresponding path program 1 times [2021-02-24 00:16:11,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:11,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476978533] [2021-02-24 00:16:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:11,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:11,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:11,773 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:16:11,775 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:16:11,779 WARN L141 QuantifierPusher]: treesize reduction 8, result has 52.9 percent of original size [2021-02-24 00:16:11,780 WARN L147 QuantifierPusher]: treesize reduction 8, result has 52.9 percent of original size 9 [2021-02-24 00:16:11,789 WARN L141 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-02-24 00:16:11,790 WARN L147 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size 15 [2021-02-24 00:16:11,804 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-24 00:16:11,806 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-24 00:16:11,821 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-24 00:16:11,822 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-24 00:16:11,839 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 00:16:11,840 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 00:16:11,862 WARN L141 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size [2021-02-24 00:16:11,864 WARN L147 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size 37 [2021-02-24 00:16:11,895 WARN L141 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-02-24 00:16:11,897 WARN L147 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size 25 [2021-02-24 00:16:11,912 WARN L141 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-02-24 00:16:11,914 WARN L147 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size 25 [2021-02-24 00:16:11,943 WARN L141 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size [2021-02-24 00:16:11,944 WARN L147 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size 25 [2021-02-24 00:16:11,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:11,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:16:12,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:12,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:16:12,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:12,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:16:12,074 WARN L141 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size [2021-02-24 00:16:12,079 WARN L147 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size 24 [2021-02-24 00:16:12,106 WARN L141 QuantifierPusher]: treesize reduction 15, result has 62.5 percent of original size [2021-02-24 00:16:12,107 WARN L147 QuantifierPusher]: treesize reduction 15, result has 62.5 percent of original size 25 [2021-02-24 00:16:12,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:12,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:16:12,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:12,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 00:16:12,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:12,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:12,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:12,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:16:12,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:12,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:12,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:12,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:12,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:12,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:12,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476978533] [2021-02-24 00:16:12,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:16:12,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-02-24 00:16:12,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854771048] [2021-02-24 00:16:12,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-24 00:16:12,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:12,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-24 00:16:12,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:16:12,323 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 20 states. [2021-02-24 00:16:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:13,859 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2021-02-24 00:16:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-24 00:16:13,860 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2021-02-24 00:16:13,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:13,863 INFO L225 Difference]: With dead ends: 112 [2021-02-24 00:16:13,864 INFO L226 Difference]: Without dead ends: 106 [2021-02-24 00:16:13,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=340, Invalid=1220, Unknown=0, NotChecked=0, Total=1560 [2021-02-24 00:16:13,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-24 00:16:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2021-02-24 00:16:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 00:16:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-02-24 00:16:13,887 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 53 [2021-02-24 00:16:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:13,888 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-02-24 00:16:13,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-24 00:16:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-02-24 00:16:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 00:16:13,889 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:13,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:13,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:16:13,890 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:13,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:13,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1326966967, now seen corresponding path program 1 times [2021-02-24 00:16:13,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:13,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047963940] [2021-02-24 00:16:13,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:13,906 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-24 00:16:13,907 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 00:16:13,907 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:16:13,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:16:13,932 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 00:16:13,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:13 BoogieIcfgContainer [2021-02-24 00:16:13,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:13,935 INFO L168 Benchmark]: Toolchain (without parser) took 4758.87 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 128.5 MB in the beginning and 69.5 MB in the end (delta: 59.1 MB). Peak memory consumption was 90.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:13,936 INFO L168 Benchmark]: CDTParser took 1.46 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:13,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.71 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 117.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:13,939 INFO L168 Benchmark]: Boogie Preprocessor took 84.85 ms. Allocated memory is still 152.0 MB. Free memory was 117.6 MB in the beginning and 115.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:13,944 INFO L168 Benchmark]: RCFGBuilder took 681.34 ms. Allocated memory is still 152.0 MB. Free memory was 115.9 MB in the beginning and 131.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:13,945 INFO L168 Benchmark]: TraceAbstraction took 3630.93 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 131.3 MB in the beginning and 69.5 MB in the end (delta: 61.8 MB). Peak memory consumption was 92.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:13,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.46 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 341.71 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 117.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.85 ms. Allocated memory is still 152.0 MB. Free memory was 117.6 MB in the beginning and 115.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 681.34 ms. Allocated memory is still 152.0 MB. Free memory was 115.9 MB in the beginning and 131.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3630.93 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 131.3 MB in the beginning and 69.5 MB in the end (delta: 61.8 MB). Peak memory consumption was 92.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i