/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/eqn3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:02,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:02,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:02,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:02,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:02,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:02,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:02,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:02,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:02,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:02,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:02,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:02,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:02,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:02,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:02,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:02,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:02,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:02,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:02,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:02,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:02,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:02,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:02,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:02,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:02,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:02,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:02,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:02,819 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:44:02,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:02,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:02,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:02,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:02,876 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:02,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:02,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:02,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:02,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:02,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:02,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:02,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:02,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:02,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:02,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:02,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:02,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:02,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:02,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:02,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:02,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:02,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:02,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:02,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:02,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:02,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:02,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:02,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:02,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:02,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:03,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:03,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:03,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:03,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:03,288 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:03,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn3f.c [2020-11-06 22:44:03,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3aaa16b0/67583e19a7c04dc8ba46693950d401b5/FLAGfb812327e [2020-11-06 22:44:04,012 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:04,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn3f.c [2020-11-06 22:44:04,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3aaa16b0/67583e19a7c04dc8ba46693950d401b5/FLAGfb812327e [2020-11-06 22:44:04,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3aaa16b0/67583e19a7c04dc8ba46693950d401b5 [2020-11-06 22:44:04,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:04,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:04,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:04,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:04,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:04,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebb2c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04, skipping insertion in model container [2020-11-06 22:44:04,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:04,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:04,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:04,657 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:04,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:04,698 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:04,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04 WrapperNode [2020-11-06 22:44:04,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:04,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:04,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:04,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:04,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04" (1/1) ... [2020-11-06 22:44:04,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:04,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:04,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:04,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:04,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:04,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:04,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:04,849 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:04,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:04,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:04,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:05,383 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:05,384 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-06 22:44:05,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:05 BoogieIcfgContainer [2020-11-06 22:44:05,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:05,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:05,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:05,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:05,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:04" (1/3) ... [2020-11-06 22:44:05,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63821e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:05, skipping insertion in model container [2020-11-06 22:44:05,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:04" (2/3) ... [2020-11-06 22:44:05,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63821e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:05, skipping insertion in model container [2020-11-06 22:44:05,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:05" (3/3) ... [2020-11-06 22:44:05,395 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2020-11-06 22:44:05,410 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:05,414 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:05,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:05,454 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:05,455 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:05,455 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:05,455 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:05,455 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:05,455 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:05,455 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:05,456 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-06 22:44:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:44:05,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:05,480 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] [2020-11-06 22:44:05,480 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:05,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:05,487 INFO L82 PathProgramCache]: Analyzing trace with hash -391571351, now seen corresponding path program 1 times [2020-11-06 22:44:05,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:05,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275573070] [2020-11-06 22:44:05,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:05,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:05,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:05,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275573070] [2020-11-06 22:44:05,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:05,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:05,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010334876] [2020-11-06 22:44:05,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:05,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:05,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:05,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:05,942 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-11-06 22:44:06,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:06,092 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2020-11-06 22:44:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:06,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-06 22:44:06,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:06,103 INFO L225 Difference]: With dead ends: 63 [2020-11-06 22:44:06,103 INFO L226 Difference]: Without dead ends: 30 [2020-11-06 22:44:06,109 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 [2020-11-06 22:44:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-06 22:44:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-06 22:44:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-06 22:44:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-11-06 22:44:06,173 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2020-11-06 22:44:06,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:06,174 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-11-06 22:44:06,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:06,175 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-06 22:44:06,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:44:06,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:06,176 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] [2020-11-06 22:44:06,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:06,177 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:06,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:06,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1402688601, now seen corresponding path program 1 times [2020-11-06 22:44:06,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:06,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081742538] [2020-11-06 22:44:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:06,243 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:06,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290165467] [2020-11-06 22:44:06,244 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 [2020-11-06 22:44:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:06,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:06,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:06,425 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:06,426 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:06,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:44:06,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:06 BoogieIcfgContainer [2020-11-06 22:44:06,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:06,703 INFO L168 Benchmark]: Toolchain (without parser) took 2356.61 ms. Allocated memory is still 155.2 MB. Free memory was 131.9 MB in the beginning and 128.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:06,707 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory was 95.5 MB in the beginning and 95.3 MB in the end (delta: 126.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:06,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.34 ms. Allocated memory is still 155.2 MB. Free memory was 131.3 MB in the beginning and 121.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:06,709 INFO L168 Benchmark]: Boogie Preprocessor took 52.62 ms. Allocated memory is still 155.2 MB. Free memory was 121.5 MB in the beginning and 119.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:06,710 INFO L168 Benchmark]: RCFGBuilder took 632.15 ms. Allocated memory is still 155.2 MB. Free memory was 119.8 MB in the beginning and 134.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:06,712 INFO L168 Benchmark]: TraceAbstraction took 1311.29 ms. Allocated memory is still 155.2 MB. Free memory was 134.3 MB in the beginning and 128.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:06,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory was 95.5 MB in the beginning and 95.3 MB in the end (delta: 126.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 342.34 ms. Allocated memory is still 155.2 MB. Free memory was 131.3 MB in the beginning and 121.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.62 ms. Allocated memory is still 155.2 MB. Free memory was 121.5 MB in the beginning and 119.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 632.15 ms. Allocated memory is still 155.2 MB. Free memory was 119.8 MB in the beginning and 134.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1311.29 ms. Allocated memory is still 155.2 MB. Free memory was 134.3 MB in the beginning and 128.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=7, 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] a[0] = 6 [L32] b[0] = 10 [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