/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:52:13,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:52:13,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:52:14,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:52:14,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:52:14,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:52:14,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:52:14,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:52:14,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:52:14,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:52:14,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:52:14,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:52:14,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:52:14,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:52:14,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:52:14,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:52:14,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:52:14,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:52:14,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:52:14,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:52:14,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:52:14,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:52:14,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:52:14,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:52:14,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:52:14,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:52:14,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:52:14,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:52:14,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:52:14,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:52:14,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:52:14,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:52:14,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:52:14,186 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:52:14,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:52:14,187 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:52:14,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:52:14,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:52:14,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:52:14,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:52:14,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:52:14,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:52:14,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:52:14,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:52:14,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:52:14,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:52:14,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:52:14,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:52:14,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:52:14,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:14,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:52:14,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:52:14,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:52:14,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:52:14,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:52:14,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:52:14,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:52:14,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:52:14,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:52:14,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:52:14,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:52:14,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:52:14,604 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:52:14,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqmf.c [2021-02-23 13:52:14,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8071b7f/e04512be1d4f4a00b814561e720af177/FLAGe651a56a5 [2021-02-23 13:52:15,320 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:52:15,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c [2021-02-23 13:52:15,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8071b7f/e04512be1d4f4a00b814561e720af177/FLAGe651a56a5 [2021-02-23 13:52:15,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae8071b7f/e04512be1d4f4a00b814561e720af177 [2021-02-23 13:52:15,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:52:15,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:52:15,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:15,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:52:15,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:52:15,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:15" (1/1) ... [2021-02-23 13:52:15,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e482e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15, skipping insertion in model container [2021-02-23 13:52:15,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:15" (1/1) ... [2021-02-23 13:52:15,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:52:15,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:52:15,557 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/sqmf.c[587,600] [2021-02-23 13:52:15,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:15,589 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:52:15,605 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/sqmf.c[587,600] [2021-02-23 13:52:15,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:15,632 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:52:15,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15 WrapperNode [2021-02-23 13:52:15,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:15,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:52:15,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:52:15,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:52:15,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15" (1/1) ... [2021-02-23 13:52:15,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15" (1/1) ... [2021-02-23 13:52:15,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15" (1/1) ... [2021-02-23 13:52:15,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15" (1/1) ... [2021-02-23 13:52:15,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15" (1/1) ... [2021-02-23 13:52:15,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15" (1/1) ... [2021-02-23 13:52:15,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15" (1/1) ... [2021-02-23 13:52:15,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:52:15,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:52:15,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:52:15,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:52:15,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15" (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 [2021-02-23 13:52:15,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:52:15,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:52:15,803 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:52:15,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:52:15,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:52:15,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:52:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:52:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:52:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:52:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:52:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:52:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:52:15,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:52:15,808 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:52:15,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:52:15,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:52:15,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:52:15,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:52:15,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:52:15,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:52:15,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:52:15,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:52:16,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:52:16,389 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 13:52:16,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:16 BoogieIcfgContainer [2021-02-23 13:52:16,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:52:16,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:52:16,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:52:16,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:52:16,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:52:15" (1/3) ... [2021-02-23 13:52:16,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a8353c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:16, skipping insertion in model container [2021-02-23 13:52:16,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:15" (2/3) ... [2021-02-23 13:52:16,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a8353c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:16, skipping insertion in model container [2021-02-23 13:52:16,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:16" (3/3) ... [2021-02-23 13:52:16,409 INFO L111 eAbstractionObserver]: Analyzing ICFG sqmf.c [2021-02-23 13:52:16,418 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:52:16,423 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:52:16,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:52:16,465 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:52:16,465 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:52:16,465 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:52:16,465 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:52:16,466 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:52:16,466 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:52:16,466 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:52:16,466 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:52:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-23 13:52:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:52:16,491 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:16,492 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] [2021-02-23 13:52:16,492 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:16,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:16,499 INFO L82 PathProgramCache]: Analyzing trace with hash 199879945, now seen corresponding path program 1 times [2021-02-23 13:52:16,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:16,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593181881] [2021-02-23 13:52:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:16,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:16,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:16,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:16,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:16,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:16,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:52:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:16,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:16,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:16,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:16,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:16,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593181881] [2021-02-23 13:52:16,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:16,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:52:16,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330706837] [2021-02-23 13:52:16,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:52:16,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:16,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:52:16,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:52:16,849 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2021-02-23 13:52:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:16,996 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2021-02-23 13:52:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:52:16,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-23 13:52:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:17,008 INFO L225 Difference]: With dead ends: 58 [2021-02-23 13:52:17,008 INFO L226 Difference]: Without dead ends: 29 [2021-02-23 13:52:17,012 INFO L677 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 [2021-02-23 13:52:17,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-02-23 13:52:17,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-02-23 13:52:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-23 13:52:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-02-23 13:52:17,061 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2021-02-23 13:52:17,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:17,062 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-02-23 13:52:17,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:52:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-02-23 13:52:17,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:52:17,063 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:17,064 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] [2021-02-23 13:52:17,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:52:17,064 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:17,065 INFO L82 PathProgramCache]: Analyzing trace with hash -386926069, now seen corresponding path program 1 times [2021-02-23 13:52:17,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:17,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100952669] [2021-02-23 13:52:17,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:17,099 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-23 13:52:17,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354816589] [2021-02-23 13:52:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:52:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:17,233 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:17,275 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:17,342 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:52:17,343 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:52:17,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-23 13:52:17,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:52:17 BoogieIcfgContainer [2021-02-23 13:52:17,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:52:17,606 INFO L168 Benchmark]: Toolchain (without parser) took 2255.18 ms. Allocated memory is still 156.2 MB. Free memory was 132.4 MB in the beginning and 84.6 MB in the end (delta: 47.8 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:17,607 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 127.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:52:17,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.45 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 121.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:17,609 INFO L168 Benchmark]: Boogie Preprocessor took 48.24 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:17,610 INFO L168 Benchmark]: RCFGBuilder took 713.42 ms. Allocated memory is still 156.2 MB. Free memory was 119.5 MB in the beginning and 136.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:17,611 INFO L168 Benchmark]: TraceAbstraction took 1204.39 ms. Allocated memory is still 156.2 MB. Free memory was 135.9 MB in the beginning and 84.6 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:17,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 127.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.45 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 121.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.24 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 713.42 ms. Allocated memory is still 156.2 MB. Free memory was 119.5 MB in the beginning and 136.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1204.39 ms. Allocated memory is still 156.2 MB. Free memory was 135.9 MB in the beginning and 84.6 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=16, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 0 [L32] a[0] = 0 [L34] i=1 VAL [\old(N)=0, a={1:0}, b={-1:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={1:0}, N=1] [L34] COND FALSE !(i