/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/ifeqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 12:44:35,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 12:44:35,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 12:44:35,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 12:44:35,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 12:44:35,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 12:44:35,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 12:44:35,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 12:44:35,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 12:44:35,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 12:44:35,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 12:44:35,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 12:44:35,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 12:44:35,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 12:44:35,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 12:44:35,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 12:44:35,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 12:44:35,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 12:44:35,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 12:44:35,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 12:44:35,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 12:44:35,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 12:44:35,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 12:44:35,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 12:44:35,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 12:44:35,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 12:44:35,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 12:44:35,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 12:44:35,773 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 [2020-07-08 12:44:35,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 12:44:35,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 12:44:35,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-08 12:44:35,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-08 12:44:35,801 INFO L138 SettingsManager]: * Use SBE=true [2020-07-08 12:44:35,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 12:44:35,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 12:44:35,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 12:44:35,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 12:44:35,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 12:44:35,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 12:44:35,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 12:44:35,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 12:44:35,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 12:44:35,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 12:44:35,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 12:44:35,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 12:44:35,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 12:44:35,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-08 12:44:35,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 12:44:35,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 12:44:35,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 12:44:35,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 12:44:35,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-08 12:44:35,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-08 12:44:35,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-08 12:44:35,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-08 12:44:35,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 12:44:35,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-08 12:44:35,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-08 12:44:36,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 12:44:36,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 12:44:36,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 12:44:36,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 12:44:36,137 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 12:44:36,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn4f.c [2020-07-08 12:44:36,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f85cb71/b0a53c27d63c490899dcb825b7dd7770/FLAGe84353df7 [2020-07-08 12:44:36,721 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 12:44:36,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn4f.c [2020-07-08 12:44:36,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f85cb71/b0a53c27d63c490899dcb825b7dd7770/FLAGe84353df7 [2020-07-08 12:44:37,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f85cb71/b0a53c27d63c490899dcb825b7dd7770 [2020-07-08 12:44:37,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 12:44:37,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 12:44:37,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 12:44:37,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 12:44:37,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 12:44:37,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:44:37" (1/1) ... [2020-07-08 12:44:37,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473d82fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37, skipping insertion in model container [2020-07-08 12:44:37,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:44:37" (1/1) ... [2020-07-08 12:44:37,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 12:44:37,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 12:44:37,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:44:37,310 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 12:44:37,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:44:37,360 INFO L208 MainTranslator]: Completed translation [2020-07-08 12:44:37,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37 WrapperNode [2020-07-08 12:44:37,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 12:44:37,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 12:44:37,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 12:44:37,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 12:44:37,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37" (1/1) ... [2020-07-08 12:44:37,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37" (1/1) ... [2020-07-08 12:44:37,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37" (1/1) ... [2020-07-08 12:44:37,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37" (1/1) ... [2020-07-08 12:44:37,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37" (1/1) ... [2020-07-08 12:44:37,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37" (1/1) ... [2020-07-08 12:44:37,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37" (1/1) ... [2020-07-08 12:44:37,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 12:44:37,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 12:44:37,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 12:44:37,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 12:44:37,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37" (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 [2020-07-08 12:44:37,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 12:44:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 12:44:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 12:44:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 12:44:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 12:44:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 12:44:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 12:44:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 12:44:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 12:44:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 12:44:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-08 12:44:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 12:44:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-08 12:44:37,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-08 12:44:37,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-08 12:44:37,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 12:44:37,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 12:44:37,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-08 12:44:38,109 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 12:44:38,110 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-08 12:44:38,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:44:38 BoogieIcfgContainer [2020-07-08 12:44:38,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 12:44:38,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 12:44:38,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 12:44:38,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 12:44:38,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 12:44:37" (1/3) ... [2020-07-08 12:44:38,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d71c05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:44:38, skipping insertion in model container [2020-07-08 12:44:38,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:44:37" (2/3) ... [2020-07-08 12:44:38,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d71c05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:44:38, skipping insertion in model container [2020-07-08 12:44:38,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:44:38" (3/3) ... [2020-07-08 12:44:38,121 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn4f.c [2020-07-08 12:44:38,131 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-08 12:44:38,138 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 12:44:38,152 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 12:44:38,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 12:44:38,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 12:44:38,176 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-08 12:44:38,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 12:44:38,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 12:44:38,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 12:44:38,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 12:44:38,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 12:44:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-08 12:44:38,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-08 12:44:38,201 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:44:38,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:44:38,202 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:44:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:44:38,208 INFO L82 PathProgramCache]: Analyzing trace with hash -294712258, now seen corresponding path program 1 times [2020-07-08 12:44:38,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:44:38,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489939627] [2020-07-08 12:44:38,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:44:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:38,442 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {39#true} is VALID [2020-07-08 12:44:38,443 INFO L280 TraceCheckUtils]: 1: Hoare triple {39#true} assume true; {39#true} is VALID [2020-07-08 12:44:38,443 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {39#true} {39#true} #91#return; {39#true} is VALID [2020-07-08 12:44:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:38,456 INFO L280 TraceCheckUtils]: 0: Hoare triple {39#true} ~cond := #in~cond; {39#true} is VALID [2020-07-08 12:44:38,458 INFO L280 TraceCheckUtils]: 1: Hoare triple {39#true} assume 0 == ~cond;assume false; {40#false} is VALID [2020-07-08 12:44:38,458 INFO L280 TraceCheckUtils]: 2: Hoare triple {40#false} assume true; {40#false} is VALID [2020-07-08 12:44:38,459 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {40#false} {39#true} #87#return; {40#false} is VALID [2020-07-08 12:44:38,461 INFO L263 TraceCheckUtils]: 0: Hoare triple {39#true} call ULTIMATE.init(); {48#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-08 12:44:38,461 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {39#true} is VALID [2020-07-08 12:44:38,462 INFO L280 TraceCheckUtils]: 2: Hoare triple {39#true} assume true; {39#true} is VALID [2020-07-08 12:44:38,462 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {39#true} {39#true} #91#return; {39#true} is VALID [2020-07-08 12:44:38,463 INFO L263 TraceCheckUtils]: 4: Hoare triple {39#true} call #t~ret10 := main(); {39#true} is VALID [2020-07-08 12:44:38,463 INFO L280 TraceCheckUtils]: 5: Hoare triple {39#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~N~0 := #t~nondet0;havoc #t~nondet0; {39#true} is VALID [2020-07-08 12:44:38,464 INFO L280 TraceCheckUtils]: 6: Hoare triple {39#true} assume !(~N~0 <= 0); {39#true} is VALID [2020-07-08 12:44:38,464 INFO L263 TraceCheckUtils]: 7: Hoare triple {39#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {39#true} is VALID [2020-07-08 12:44:38,464 INFO L280 TraceCheckUtils]: 8: Hoare triple {39#true} ~cond := #in~cond; {39#true} is VALID [2020-07-08 12:44:38,465 INFO L280 TraceCheckUtils]: 9: Hoare triple {39#true} assume 0 == ~cond;assume false; {40#false} is VALID [2020-07-08 12:44:38,466 INFO L280 TraceCheckUtils]: 10: Hoare triple {40#false} assume true; {40#false} is VALID [2020-07-08 12:44:38,466 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {40#false} {39#true} #87#return; {40#false} is VALID [2020-07-08 12:44:38,467 INFO L280 TraceCheckUtils]: 12: Hoare triple {40#false} havoc ~i~0;call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);~b~0.base, ~b~0.offset := #t~malloc2.base, #t~malloc2.offset;~i~0 := 0; {40#false} is VALID [2020-07-08 12:44:38,468 INFO L280 TraceCheckUtils]: 13: Hoare triple {40#false} assume !(~i~0 < ~N~0); {40#false} is VALID [2020-07-08 12:44:38,468 INFO L280 TraceCheckUtils]: 14: Hoare triple {40#false} ~i~0 := 0; {40#false} is VALID [2020-07-08 12:44:38,468 INFO L280 TraceCheckUtils]: 15: Hoare triple {40#false} assume !true; {40#false} is VALID [2020-07-08 12:44:38,469 INFO L280 TraceCheckUtils]: 16: Hoare triple {40#false} ~i~0 := 0; {40#false} is VALID [2020-07-08 12:44:38,469 INFO L280 TraceCheckUtils]: 17: Hoare triple {40#false} assume !!(~i~0 < ~N~0);call #t~mem9 := read~int(~b~0.base, ~b~0.offset + 8 * ~i~0, 8); {40#false} is VALID [2020-07-08 12:44:38,469 INFO L263 TraceCheckUtils]: 18: Hoare triple {40#false} call __VERIFIER_assert((if #t~mem9 == 1 + (4 * ~i~0 * ~i~0 + 4 * ~i~0) then 1 else 0)); {40#false} is VALID [2020-07-08 12:44:38,470 INFO L280 TraceCheckUtils]: 19: Hoare triple {40#false} ~cond := #in~cond; {40#false} is VALID [2020-07-08 12:44:38,470 INFO L280 TraceCheckUtils]: 20: Hoare triple {40#false} assume 0 == ~cond; {40#false} is VALID [2020-07-08 12:44:38,472 INFO L280 TraceCheckUtils]: 21: Hoare triple {40#false} assume !false; {40#false} is VALID [2020-07-08 12:44:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:44:38,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489939627] [2020-07-08 12:44:38,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:44:38,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-08 12:44:38,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108137128] [2020-07-08 12:44:38,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-08 12:44:38,495 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:44:38,498 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-08 12:44:38,551 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:38,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-08 12:44:38,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:44:38,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-08 12:44:38,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-08 12:44:38,565 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-07-08 12:44:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:38,822 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-07-08 12:44:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-08 12:44:38,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-08 12:44:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:44:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-08 12:44:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2020-07-08 12:44:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-08 12:44:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2020-07-08 12:44:38,843 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 81 transitions. [2020-07-08 12:44:39,031 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 81 edges. 81 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:39,056 INFO L225 Difference]: With dead ends: 62 [2020-07-08 12:44:39,056 INFO L226 Difference]: Without dead ends: 31 [2020-07-08 12:44:39,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-08 12:44:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-08 12:44:39,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-08 12:44:39,108 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:44:39,109 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand 31 states. [2020-07-08 12:44:39,110 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 31 states. [2020-07-08 12:44:39,110 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 31 states. [2020-07-08 12:44:39,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:39,115 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-08 12:44:39,115 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-08 12:44:39,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:39,116 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:39,116 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 31 states. [2020-07-08 12:44:39,116 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 31 states. [2020-07-08 12:44:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:39,121 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-08 12:44:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-08 12:44:39,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:39,122 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:39,122 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:44:39,122 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:44:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-08 12:44:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-07-08 12:44:39,127 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-07-08 12:44:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:44:39,128 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-07-08 12:44:39,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-08 12:44:39,128 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-08 12:44:39,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-08 12:44:39,129 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:44:39,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:44:39,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 12:44:39,130 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:44:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:44:39,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2054124171, now seen corresponding path program 1 times [2020-07-08 12:44:39,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:44:39,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192760514] [2020-07-08 12:44:39,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:44:39,173 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-08 12:44:39,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363604233] [2020-07-08 12:44:39,174 INFO L94 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 [2020-07-08 12:44:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:39,229 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-08 12:44:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:39,249 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-08 12:44:39,337 INFO L263 TraceCheckUtils]: 0: Hoare triple {233#true} call ULTIMATE.init(); {233#true} is VALID [2020-07-08 12:44:39,338 INFO L280 TraceCheckUtils]: 1: Hoare triple {233#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {233#true} is VALID [2020-07-08 12:44:39,338 INFO L280 TraceCheckUtils]: 2: Hoare triple {233#true} assume true; {233#true} is VALID [2020-07-08 12:44:39,338 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {233#true} {233#true} #91#return; {233#true} is VALID [2020-07-08 12:44:39,339 INFO L263 TraceCheckUtils]: 4: Hoare triple {233#true} call #t~ret10 := main(); {233#true} is VALID [2020-07-08 12:44:39,339 INFO L280 TraceCheckUtils]: 5: Hoare triple {233#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~N~0 := #t~nondet0;havoc #t~nondet0; {233#true} is VALID [2020-07-08 12:44:39,340 INFO L280 TraceCheckUtils]: 6: Hoare triple {233#true} assume !(~N~0 <= 0); {256#(< 0 ~N~0)} is VALID [2020-07-08 12:44:39,341 INFO L263 TraceCheckUtils]: 7: Hoare triple {256#(< 0 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {256#(< 0 ~N~0)} is VALID [2020-07-08 12:44:39,343 INFO L280 TraceCheckUtils]: 8: Hoare triple {256#(< 0 ~N~0)} ~cond := #in~cond; {256#(< 0 ~N~0)} is VALID [2020-07-08 12:44:39,344 INFO L280 TraceCheckUtils]: 9: Hoare triple {256#(< 0 ~N~0)} assume !(0 == ~cond); {256#(< 0 ~N~0)} is VALID [2020-07-08 12:44:39,344 INFO L280 TraceCheckUtils]: 10: Hoare triple {256#(< 0 ~N~0)} assume true; {256#(< 0 ~N~0)} is VALID [2020-07-08 12:44:39,346 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {256#(< 0 ~N~0)} {256#(< 0 ~N~0)} #87#return; {256#(< 0 ~N~0)} is VALID [2020-07-08 12:44:39,348 INFO L280 TraceCheckUtils]: 12: Hoare triple {256#(< 0 ~N~0)} havoc ~i~0;call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);~b~0.base, ~b~0.offset := #t~malloc2.base, #t~malloc2.offset;~i~0 := 0; {275#(and (<= main_~i~0 0) (< 0 ~N~0))} is VALID [2020-07-08 12:44:39,349 INFO L280 TraceCheckUtils]: 13: Hoare triple {275#(and (<= main_~i~0 0) (< 0 ~N~0))} assume !(~i~0 < ~N~0); {234#false} is VALID [2020-07-08 12:44:39,349 INFO L280 TraceCheckUtils]: 14: Hoare triple {234#false} ~i~0 := 0; {234#false} is VALID [2020-07-08 12:44:39,350 INFO L280 TraceCheckUtils]: 15: Hoare triple {234#false} assume !(~i~0 < ~N~0); {234#false} is VALID [2020-07-08 12:44:39,350 INFO L280 TraceCheckUtils]: 16: Hoare triple {234#false} ~i~0 := 0; {234#false} is VALID [2020-07-08 12:44:39,351 INFO L280 TraceCheckUtils]: 17: Hoare triple {234#false} assume !!(~i~0 < ~N~0);call #t~mem9 := read~int(~b~0.base, ~b~0.offset + 8 * ~i~0, 8); {234#false} is VALID [2020-07-08 12:44:39,351 INFO L263 TraceCheckUtils]: 18: Hoare triple {234#false} call __VERIFIER_assert((if #t~mem9 == 1 + (4 * ~i~0 * ~i~0 + 4 * ~i~0) then 1 else 0)); {234#false} is VALID [2020-07-08 12:44:39,351 INFO L280 TraceCheckUtils]: 19: Hoare triple {234#false} ~cond := #in~cond; {234#false} is VALID [2020-07-08 12:44:39,351 INFO L280 TraceCheckUtils]: 20: Hoare triple {234#false} assume 0 == ~cond; {234#false} is VALID [2020-07-08 12:44:39,352 INFO L280 TraceCheckUtils]: 21: Hoare triple {234#false} assume !false; {234#false} is VALID [2020-07-08 12:44:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:44:39,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192760514] [2020-07-08 12:44:39,355 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-08 12:44:39,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363604233] [2020-07-08 12:44:39,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:44:39,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-08 12:44:39,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949928985] [2020-07-08 12:44:39,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-08 12:44:39,358 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:44:39,358 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-08 12:44:39,392 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:39,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-08 12:44:39,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:44:39,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-08 12:44:39,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-08 12:44:39,394 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-07-08 12:44:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:39,624 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-07-08 12:44:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-08 12:44:39,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-08 12:44:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:44:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-08 12:44:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2020-07-08 12:44:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-08 12:44:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2020-07-08 12:44:39,643 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 67 transitions. [2020-07-08 12:44:39,748 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 67 edges. 67 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:39,752 INFO L225 Difference]: With dead ends: 56 [2020-07-08 12:44:39,753 INFO L226 Difference]: Without dead ends: 41 [2020-07-08 12:44:39,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-08 12:44:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-08 12:44:39,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-07-08 12:44:39,812 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:44:39,812 INFO L82 GeneralOperation]: Start isEquivalent. First operand 41 states. Second operand 33 states. [2020-07-08 12:44:39,813 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 33 states. [2020-07-08 12:44:39,813 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 33 states. [2020-07-08 12:44:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:39,825 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-07-08 12:44:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-07-08 12:44:39,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:39,826 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:39,826 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 41 states. [2020-07-08 12:44:39,827 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 41 states. [2020-07-08 12:44:39,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:39,834 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-07-08 12:44:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-07-08 12:44:39,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:39,836 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:39,837 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:44:39,837 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:44:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-08 12:44:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-07-08 12:44:39,849 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2020-07-08 12:44:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:44:39,850 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-07-08 12:44:39,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-08 12:44:39,850 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-07-08 12:44:39,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-08 12:44:39,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:44:39,854 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] [2020-07-08 12:44:40,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-08 12:44:40,070 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:44:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:44:40,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1477618916, now seen corresponding path program 1 times [2020-07-08 12:44:40,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:44:40,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203839196] [2020-07-08 12:44:40,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:44:40,108 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-08 12:44:40,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911775237] [2020-07-08 12:44:40,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-08 12:44:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:40,193 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-08 12:44:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:40,210 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-08 12:44:40,283 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-08 12:44:40,284 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-08 12:44:40,289 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-08 12:44:40,290 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-08 12:44:40,290 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-08 12:44:40,353 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-08 12:44:40,354 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-07-08 12:44:40,355 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-08 12:44:40,367 INFO L624 ElimStorePlain]: treesize reduction 9, result has 43.8 percent of original size [2020-07-08 12:44:40,367 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-08 12:44:40,368 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-07-08 12:44:40,373 WARN L406 uantifierElimination]: Trying to double check SDD result, but SMT solver's response was UNKNOWN. [2020-07-08 12:44:40,373 WARN L407 uantifierElimination]: Input elimination task: ∃ [|#memory_int|, main_~b~0.base, main_~b~0.offset]. (let ((.cse0 (select |#memory_int| main_~b~0.base))) (and (= (select .cse0 main_~b~0.offset) 1) (= (select .cse0 (+ main_~b~0.offset (* main_~i~0 8))) |main_#t~mem9|) (= 0 main_~i~0))) [2020-07-08 12:44:40,374 WARN L408 uantifierElimination]: ElimStorePlain result: ∃ []. (and (= 0 main_~i~0) (= 1 |main_#t~mem9|)) [2020-07-08 12:44:40,452 INFO L263 TraceCheckUtils]: 0: Hoare triple {505#true} call ULTIMATE.init(); {505#true} is VALID [2020-07-08 12:44:40,452 INFO L280 TraceCheckUtils]: 1: Hoare triple {505#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {505#true} is VALID [2020-07-08 12:44:40,453 INFO L280 TraceCheckUtils]: 2: Hoare triple {505#true} assume true; {505#true} is VALID [2020-07-08 12:44:40,453 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {505#true} {505#true} #91#return; {505#true} is VALID [2020-07-08 12:44:40,453 INFO L263 TraceCheckUtils]: 4: Hoare triple {505#true} call #t~ret10 := main(); {505#true} is VALID [2020-07-08 12:44:40,454 INFO L280 TraceCheckUtils]: 5: Hoare triple {505#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~N~0 := #t~nondet0;havoc #t~nondet0; {505#true} is VALID [2020-07-08 12:44:40,454 INFO L280 TraceCheckUtils]: 6: Hoare triple {505#true} assume !(~N~0 <= 0); {505#true} is VALID [2020-07-08 12:44:40,454 INFO L263 TraceCheckUtils]: 7: Hoare triple {505#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {505#true} is VALID [2020-07-08 12:44:40,455 INFO L280 TraceCheckUtils]: 8: Hoare triple {505#true} ~cond := #in~cond; {505#true} is VALID [2020-07-08 12:44:40,455 INFO L280 TraceCheckUtils]: 9: Hoare triple {505#true} assume !(0 == ~cond); {505#true} is VALID [2020-07-08 12:44:40,455 INFO L280 TraceCheckUtils]: 10: Hoare triple {505#true} assume true; {505#true} is VALID [2020-07-08 12:44:40,455 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {505#true} {505#true} #87#return; {505#true} is VALID [2020-07-08 12:44:40,456 INFO L280 TraceCheckUtils]: 12: Hoare triple {505#true} havoc ~i~0;call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);~b~0.base, ~b~0.offset := #t~malloc2.base, #t~malloc2.offset;~i~0 := 0; {505#true} is VALID [2020-07-08 12:44:40,456 INFO L280 TraceCheckUtils]: 13: Hoare triple {505#true} assume !!(~i~0 < ~N~0); {505#true} is VALID [2020-07-08 12:44:40,456 INFO L280 TraceCheckUtils]: 14: Hoare triple {505#true} assume 0 == ~i~0;call write~int(4, ~a~0.base, ~a~0.offset, 8); {505#true} is VALID [2020-07-08 12:44:40,457 INFO L280 TraceCheckUtils]: 15: Hoare triple {505#true} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {505#true} is VALID [2020-07-08 12:44:40,457 INFO L280 TraceCheckUtils]: 16: Hoare triple {505#true} assume !(~i~0 < ~N~0); {505#true} is VALID [2020-07-08 12:44:40,457 INFO L280 TraceCheckUtils]: 17: Hoare triple {505#true} ~i~0 := 0; {505#true} is VALID [2020-07-08 12:44:40,458 INFO L280 TraceCheckUtils]: 18: Hoare triple {505#true} assume !!(~i~0 < ~N~0); {505#true} is VALID [2020-07-08 12:44:40,459 INFO L280 TraceCheckUtils]: 19: Hoare triple {505#true} assume 0 == ~i~0;call write~int(1, ~b~0.base, ~b~0.offset, 8); {567#(= (select (select |#memory_int| main_~b~0.base) main_~b~0.offset) 1)} is VALID [2020-07-08 12:44:40,460 INFO L280 TraceCheckUtils]: 20: Hoare triple {567#(= (select (select |#memory_int| main_~b~0.base) main_~b~0.offset) 1)} #t~post5 := ~i~0;~i~0 := 1 + #t~post5;havoc #t~post5; {567#(= (select (select |#memory_int| main_~b~0.base) main_~b~0.offset) 1)} is VALID [2020-07-08 12:44:40,461 INFO L280 TraceCheckUtils]: 21: Hoare triple {567#(= (select (select |#memory_int| main_~b~0.base) main_~b~0.offset) 1)} assume !(~i~0 < ~N~0); {567#(= (select (select |#memory_int| main_~b~0.base) main_~b~0.offset) 1)} is VALID [2020-07-08 12:44:40,461 INFO L280 TraceCheckUtils]: 22: Hoare triple {567#(= (select (select |#memory_int| main_~b~0.base) main_~b~0.offset) 1)} ~i~0 := 0; {577#(and (= (select (select |#memory_int| main_~b~0.base) main_~b~0.offset) 1) (= 0 main_~i~0))} is VALID [2020-07-08 12:44:40,463 INFO L280 TraceCheckUtils]: 23: Hoare triple {577#(and (= (select (select |#memory_int| main_~b~0.base) main_~b~0.offset) 1) (= 0 main_~i~0))} assume !!(~i~0 < ~N~0);call #t~mem9 := read~int(~b~0.base, ~b~0.offset + 8 * ~i~0, 8); {581#(and (= 0 main_~i~0) (= 1 |main_#t~mem9|))} is VALID [2020-07-08 12:44:40,464 INFO L263 TraceCheckUtils]: 24: Hoare triple {581#(and (= 0 main_~i~0) (= 1 |main_#t~mem9|))} call __VERIFIER_assert((if #t~mem9 == 1 + (4 * ~i~0 * ~i~0 + 4 * ~i~0) then 1 else 0)); {585#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2020-07-08 12:44:40,465 INFO L280 TraceCheckUtils]: 25: Hoare triple {585#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {589#(<= 1 __VERIFIER_assert_~cond)} is VALID [2020-07-08 12:44:40,466 INFO L280 TraceCheckUtils]: 26: Hoare triple {589#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {506#false} is VALID [2020-07-08 12:44:40,466 INFO L280 TraceCheckUtils]: 27: Hoare triple {506#false} assume !false; {506#false} is VALID [2020-07-08 12:44:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-08 12:44:40,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203839196] [2020-07-08 12:44:40,469 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-08 12:44:40,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911775237] [2020-07-08 12:44:40,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:44:40,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-08 12:44:40,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068443924] [2020-07-08 12:44:40,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-07-08 12:44:40,471 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:44:40,471 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-08 12:44:40,521 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:40,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-08 12:44:40,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:44:40,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-08 12:44:40,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-08 12:44:40,523 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-07-08 12:44:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:41,015 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-07-08 12:44:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-08 12:44:41,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-07-08 12:44:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:44:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-08 12:44:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 57 transitions. [2020-07-08 12:44:41,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-08 12:44:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 57 transitions. [2020-07-08 12:44:41,022 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 57 transitions. [2020-07-08 12:44:41,084 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:41,087 INFO L225 Difference]: With dead ends: 52 [2020-07-08 12:44:41,087 INFO L226 Difference]: Without dead ends: 50 [2020-07-08 12:44:41,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-08 12:44:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-08 12:44:41,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-07-08 12:44:41,126 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:44:41,126 INFO L82 GeneralOperation]: Start isEquivalent. First operand 50 states. Second operand 43 states. [2020-07-08 12:44:41,126 INFO L74 IsIncluded]: Start isIncluded. First operand 50 states. Second operand 43 states. [2020-07-08 12:44:41,126 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 43 states. [2020-07-08 12:44:41,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:41,130 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-07-08 12:44:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-07-08 12:44:41,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:41,131 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:41,131 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 50 states. [2020-07-08 12:44:41,131 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 50 states. [2020-07-08 12:44:41,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:41,135 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-07-08 12:44:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-07-08 12:44:41,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:41,136 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:41,136 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:44:41,136 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:44:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-08 12:44:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-07-08 12:44:41,139 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 28 [2020-07-08 12:44:41,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:44:41,139 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-07-08 12:44:41,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-08 12:44:41,140 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-07-08 12:44:41,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-08 12:44:41,141 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:44:41,141 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] [2020-07-08 12:44:41,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-08 12:44:41,355 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:44:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:44:41,356 INFO L82 PathProgramCache]: Analyzing trace with hash -797560546, now seen corresponding path program 1 times [2020-07-08 12:44:41,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:44:41,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154828705] [2020-07-08 12:44:41,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:44:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:41,455 INFO L280 TraceCheckUtils]: 0: Hoare triple {840#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {830#true} is VALID [2020-07-08 12:44:41,456 INFO L280 TraceCheckUtils]: 1: Hoare triple {830#true} assume true; {830#true} is VALID [2020-07-08 12:44:41,456 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {830#true} {830#true} #91#return; {830#true} is VALID [2020-07-08 12:44:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:41,470 INFO L280 TraceCheckUtils]: 0: Hoare triple {830#true} ~cond := #in~cond; {830#true} is VALID [2020-07-08 12:44:41,470 INFO L280 TraceCheckUtils]: 1: Hoare triple {830#true} assume !(0 == ~cond); {830#true} is VALID [2020-07-08 12:44:41,470 INFO L280 TraceCheckUtils]: 2: Hoare triple {830#true} assume true; {830#true} is VALID [2020-07-08 12:44:41,471 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {830#true} {830#true} #87#return; {830#true} is VALID [2020-07-08 12:44:41,472 INFO L263 TraceCheckUtils]: 0: Hoare triple {830#true} call ULTIMATE.init(); {840#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-08 12:44:41,473 INFO L280 TraceCheckUtils]: 1: Hoare triple {840#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {830#true} is VALID [2020-07-08 12:44:41,473 INFO L280 TraceCheckUtils]: 2: Hoare triple {830#true} assume true; {830#true} is VALID [2020-07-08 12:44:41,473 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {830#true} {830#true} #91#return; {830#true} is VALID [2020-07-08 12:44:41,473 INFO L263 TraceCheckUtils]: 4: Hoare triple {830#true} call #t~ret10 := main(); {830#true} is VALID [2020-07-08 12:44:41,473 INFO L280 TraceCheckUtils]: 5: Hoare triple {830#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~N~0 := #t~nondet0;havoc #t~nondet0; {830#true} is VALID [2020-07-08 12:44:41,474 INFO L280 TraceCheckUtils]: 6: Hoare triple {830#true} assume !(~N~0 <= 0); {830#true} is VALID [2020-07-08 12:44:41,474 INFO L263 TraceCheckUtils]: 7: Hoare triple {830#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {830#true} is VALID [2020-07-08 12:44:41,474 INFO L280 TraceCheckUtils]: 8: Hoare triple {830#true} ~cond := #in~cond; {830#true} is VALID [2020-07-08 12:44:41,474 INFO L280 TraceCheckUtils]: 9: Hoare triple {830#true} assume !(0 == ~cond); {830#true} is VALID [2020-07-08 12:44:41,475 INFO L280 TraceCheckUtils]: 10: Hoare triple {830#true} assume true; {830#true} is VALID [2020-07-08 12:44:41,475 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {830#true} {830#true} #87#return; {830#true} is VALID [2020-07-08 12:44:41,475 INFO L280 TraceCheckUtils]: 12: Hoare triple {830#true} havoc ~i~0;call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);~b~0.base, ~b~0.offset := #t~malloc2.base, #t~malloc2.offset;~i~0 := 0; {830#true} is VALID [2020-07-08 12:44:41,476 INFO L280 TraceCheckUtils]: 13: Hoare triple {830#true} assume !!(~i~0 < ~N~0); {830#true} is VALID [2020-07-08 12:44:41,476 INFO L280 TraceCheckUtils]: 14: Hoare triple {830#true} assume 0 == ~i~0;call write~int(4, ~a~0.base, ~a~0.offset, 8); {830#true} is VALID [2020-07-08 12:44:41,476 INFO L280 TraceCheckUtils]: 15: Hoare triple {830#true} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {830#true} is VALID [2020-07-08 12:44:41,476 INFO L280 TraceCheckUtils]: 16: Hoare triple {830#true} assume !(~i~0 < ~N~0); {830#true} is VALID [2020-07-08 12:44:41,478 INFO L280 TraceCheckUtils]: 17: Hoare triple {830#true} ~i~0 := 0; {839#(= 0 main_~i~0)} is VALID [2020-07-08 12:44:41,479 INFO L280 TraceCheckUtils]: 18: Hoare triple {839#(= 0 main_~i~0)} assume !!(~i~0 < ~N~0); {839#(= 0 main_~i~0)} is VALID [2020-07-08 12:44:41,480 INFO L280 TraceCheckUtils]: 19: Hoare triple {839#(= 0 main_~i~0)} assume !(0 == ~i~0);call #t~mem6 := read~int(~b~0.base, ~b~0.offset + 8 * (~i~0 - 1), 8);call #t~mem7 := read~int(~a~0.base, ~a~0.offset + 8 * (~i~0 - 1), 8);call write~int(#t~mem6 + #t~mem7, ~b~0.base, ~b~0.offset + 8 * ~i~0, 8);havoc #t~mem7;havoc #t~mem6; {831#false} is VALID [2020-07-08 12:44:41,481 INFO L280 TraceCheckUtils]: 20: Hoare triple {831#false} #t~post5 := ~i~0;~i~0 := 1 + #t~post5;havoc #t~post5; {831#false} is VALID [2020-07-08 12:44:41,481 INFO L280 TraceCheckUtils]: 21: Hoare triple {831#false} assume !(~i~0 < ~N~0); {831#false} is VALID [2020-07-08 12:44:41,481 INFO L280 TraceCheckUtils]: 22: Hoare triple {831#false} ~i~0 := 0; {831#false} is VALID [2020-07-08 12:44:41,482 INFO L280 TraceCheckUtils]: 23: Hoare triple {831#false} assume !!(~i~0 < ~N~0);call #t~mem9 := read~int(~b~0.base, ~b~0.offset + 8 * ~i~0, 8); {831#false} is VALID [2020-07-08 12:44:41,482 INFO L263 TraceCheckUtils]: 24: Hoare triple {831#false} call __VERIFIER_assert((if #t~mem9 == 1 + (4 * ~i~0 * ~i~0 + 4 * ~i~0) then 1 else 0)); {831#false} is VALID [2020-07-08 12:44:41,482 INFO L280 TraceCheckUtils]: 25: Hoare triple {831#false} ~cond := #in~cond; {831#false} is VALID [2020-07-08 12:44:41,482 INFO L280 TraceCheckUtils]: 26: Hoare triple {831#false} assume 0 == ~cond; {831#false} is VALID [2020-07-08 12:44:41,483 INFO L280 TraceCheckUtils]: 27: Hoare triple {831#false} assume !false; {831#false} is VALID [2020-07-08 12:44:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-08 12:44:41,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154828705] [2020-07-08 12:44:41,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:44:41,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-08 12:44:41,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530828647] [2020-07-08 12:44:41,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-08 12:44:41,486 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:44:41,486 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-08 12:44:41,522 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:41,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-08 12:44:41,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:44:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-08 12:44:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-08 12:44:41,523 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 4 states. [2020-07-08 12:44:41,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:41,788 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2020-07-08 12:44:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-08 12:44:41,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-08 12:44:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:44:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-08 12:44:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2020-07-08 12:44:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-08 12:44:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2020-07-08 12:44:41,800 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 70 transitions. [2020-07-08 12:44:41,878 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 70 edges. 70 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:41,880 INFO L225 Difference]: With dead ends: 74 [2020-07-08 12:44:41,880 INFO L226 Difference]: Without dead ends: 45 [2020-07-08 12:44:41,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-08 12:44:41,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-08 12:44:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-07-08 12:44:41,923 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:44:41,923 INFO L82 GeneralOperation]: Start isEquivalent. First operand 45 states. Second operand 41 states. [2020-07-08 12:44:41,923 INFO L74 IsIncluded]: Start isIncluded. First operand 45 states. Second operand 41 states. [2020-07-08 12:44:41,923 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 41 states. [2020-07-08 12:44:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:41,926 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-07-08 12:44:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-07-08 12:44:41,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:41,927 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:41,927 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 45 states. [2020-07-08 12:44:41,927 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 45 states. [2020-07-08 12:44:41,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:41,930 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-07-08 12:44:41,931 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-07-08 12:44:41,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:41,931 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:41,931 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:44:41,931 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:44:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-08 12:44:41,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-07-08 12:44:41,934 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 28 [2020-07-08 12:44:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:44:41,934 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-07-08 12:44:41,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-08 12:44:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-07-08 12:44:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-08 12:44:41,936 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:44:41,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-07-08 12:44:41,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-08 12:44:41,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:44:41,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:44:41,937 INFO L82 PathProgramCache]: Analyzing trace with hash -622618382, now seen corresponding path program 1 times [2020-07-08 12:44:41,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:44:41,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612031169] [2020-07-08 12:44:41,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:44:41,956 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-08 12:44:41,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466774979] [2020-07-08 12:44:41,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-08 12:44:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:41,999 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-08 12:44:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:44:42,014 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-08 12:44:42,119 INFO L263 TraceCheckUtils]: 0: Hoare triple {1090#true} call ULTIMATE.init(); {1090#true} is VALID [2020-07-08 12:44:42,119 INFO L280 TraceCheckUtils]: 1: Hoare triple {1090#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {1090#true} is VALID [2020-07-08 12:44:42,120 INFO L280 TraceCheckUtils]: 2: Hoare triple {1090#true} assume true; {1090#true} is VALID [2020-07-08 12:44:42,120 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1090#true} {1090#true} #91#return; {1090#true} is VALID [2020-07-08 12:44:42,120 INFO L263 TraceCheckUtils]: 4: Hoare triple {1090#true} call #t~ret10 := main(); {1090#true} is VALID [2020-07-08 12:44:42,121 INFO L280 TraceCheckUtils]: 5: Hoare triple {1090#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~N~0 := #t~nondet0;havoc #t~nondet0; {1090#true} is VALID [2020-07-08 12:44:42,121 INFO L280 TraceCheckUtils]: 6: Hoare triple {1090#true} assume !(~N~0 <= 0); {1090#true} is VALID [2020-07-08 12:44:42,121 INFO L263 TraceCheckUtils]: 7: Hoare triple {1090#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {1090#true} is VALID [2020-07-08 12:44:42,121 INFO L280 TraceCheckUtils]: 8: Hoare triple {1090#true} ~cond := #in~cond; {1090#true} is VALID [2020-07-08 12:44:42,121 INFO L280 TraceCheckUtils]: 9: Hoare triple {1090#true} assume !(0 == ~cond); {1090#true} is VALID [2020-07-08 12:44:42,122 INFO L280 TraceCheckUtils]: 10: Hoare triple {1090#true} assume true; {1090#true} is VALID [2020-07-08 12:44:42,122 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {1090#true} {1090#true} #87#return; {1090#true} is VALID [2020-07-08 12:44:42,123 INFO L280 TraceCheckUtils]: 12: Hoare triple {1090#true} havoc ~i~0;call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8 * ~N~0);~b~0.base, ~b~0.offset := #t~malloc2.base, #t~malloc2.offset;~i~0 := 0; {1131#(<= main_~i~0 0)} is VALID [2020-07-08 12:44:42,124 INFO L280 TraceCheckUtils]: 13: Hoare triple {1131#(<= main_~i~0 0)} assume !!(~i~0 < ~N~0); {1131#(<= main_~i~0 0)} is VALID [2020-07-08 12:44:42,125 INFO L280 TraceCheckUtils]: 14: Hoare triple {1131#(<= main_~i~0 0)} assume 0 == ~i~0;call write~int(4, ~a~0.base, ~a~0.offset, 8); {1131#(<= main_~i~0 0)} is VALID [2020-07-08 12:44:42,126 INFO L280 TraceCheckUtils]: 15: Hoare triple {1131#(<= main_~i~0 0)} #t~post3 := ~i~0;~i~0 := 1 + #t~post3;havoc #t~post3; {1141#(<= main_~i~0 1)} is VALID [2020-07-08 12:44:42,127 INFO L280 TraceCheckUtils]: 16: Hoare triple {1141#(<= main_~i~0 1)} assume !(~i~0 < ~N~0); {1145#(<= ~N~0 1)} is VALID [2020-07-08 12:44:42,128 INFO L280 TraceCheckUtils]: 17: Hoare triple {1145#(<= ~N~0 1)} ~i~0 := 0; {1145#(<= ~N~0 1)} is VALID [2020-07-08 12:44:42,128 INFO L280 TraceCheckUtils]: 18: Hoare triple {1145#(<= ~N~0 1)} assume !!(~i~0 < ~N~0); {1145#(<= ~N~0 1)} is VALID [2020-07-08 12:44:42,129 INFO L280 TraceCheckUtils]: 19: Hoare triple {1145#(<= ~N~0 1)} assume 0 == ~i~0;call write~int(1, ~b~0.base, ~b~0.offset, 8); {1145#(<= ~N~0 1)} is VALID [2020-07-08 12:44:42,130 INFO L280 TraceCheckUtils]: 20: Hoare triple {1145#(<= ~N~0 1)} #t~post5 := ~i~0;~i~0 := 1 + #t~post5;havoc #t~post5; {1145#(<= ~N~0 1)} is VALID [2020-07-08 12:44:42,130 INFO L280 TraceCheckUtils]: 21: Hoare triple {1145#(<= ~N~0 1)} assume !(~i~0 < ~N~0); {1145#(<= ~N~0 1)} is VALID [2020-07-08 12:44:42,131 INFO L280 TraceCheckUtils]: 22: Hoare triple {1145#(<= ~N~0 1)} ~i~0 := 0; {1164#(and (<= 0 main_~i~0) (<= ~N~0 1))} is VALID [2020-07-08 12:44:42,132 INFO L280 TraceCheckUtils]: 23: Hoare triple {1164#(and (<= 0 main_~i~0) (<= ~N~0 1))} assume !!(~i~0 < ~N~0);call #t~mem9 := read~int(~b~0.base, ~b~0.offset + 8 * ~i~0, 8); {1164#(and (<= 0 main_~i~0) (<= ~N~0 1))} is VALID [2020-07-08 12:44:42,133 INFO L263 TraceCheckUtils]: 24: Hoare triple {1164#(and (<= 0 main_~i~0) (<= ~N~0 1))} call __VERIFIER_assert((if #t~mem9 == 1 + (4 * ~i~0 * ~i~0 + 4 * ~i~0) then 1 else 0)); {1145#(<= ~N~0 1)} is VALID [2020-07-08 12:44:42,134 INFO L280 TraceCheckUtils]: 25: Hoare triple {1145#(<= ~N~0 1)} ~cond := #in~cond; {1145#(<= ~N~0 1)} is VALID [2020-07-08 12:44:42,135 INFO L280 TraceCheckUtils]: 26: Hoare triple {1145#(<= ~N~0 1)} assume !(0 == ~cond); {1145#(<= ~N~0 1)} is VALID [2020-07-08 12:44:42,136 INFO L280 TraceCheckUtils]: 27: Hoare triple {1145#(<= ~N~0 1)} assume true; {1145#(<= ~N~0 1)} is VALID [2020-07-08 12:44:42,137 INFO L275 TraceCheckUtils]: 28: Hoare quadruple {1145#(<= ~N~0 1)} {1164#(and (<= 0 main_~i~0) (<= ~N~0 1))} #89#return; {1164#(and (<= 0 main_~i~0) (<= ~N~0 1))} is VALID [2020-07-08 12:44:42,138 INFO L280 TraceCheckUtils]: 29: Hoare triple {1164#(and (<= 0 main_~i~0) (<= ~N~0 1))} havoc #t~mem9; {1164#(and (<= 0 main_~i~0) (<= ~N~0 1))} is VALID [2020-07-08 12:44:42,139 INFO L280 TraceCheckUtils]: 30: Hoare triple {1164#(and (<= 0 main_~i~0) (<= ~N~0 1))} #t~post8 := ~i~0;~i~0 := 1 + #t~post8;havoc #t~post8; {1189#(and (<= ~N~0 1) (<= 1 main_~i~0))} is VALID [2020-07-08 12:44:42,139 INFO L280 TraceCheckUtils]: 31: Hoare triple {1189#(and (<= ~N~0 1) (<= 1 main_~i~0))} assume !!(~i~0 < ~N~0);call #t~mem9 := read~int(~b~0.base, ~b~0.offset + 8 * ~i~0, 8); {1091#false} is VALID [2020-07-08 12:44:42,140 INFO L263 TraceCheckUtils]: 32: Hoare triple {1091#false} call __VERIFIER_assert((if #t~mem9 == 1 + (4 * ~i~0 * ~i~0 + 4 * ~i~0) then 1 else 0)); {1091#false} is VALID [2020-07-08 12:44:42,140 INFO L280 TraceCheckUtils]: 33: Hoare triple {1091#false} ~cond := #in~cond; {1091#false} is VALID [2020-07-08 12:44:42,140 INFO L280 TraceCheckUtils]: 34: Hoare triple {1091#false} assume 0 == ~cond; {1091#false} is VALID [2020-07-08 12:44:42,140 INFO L280 TraceCheckUtils]: 35: Hoare triple {1091#false} assume !false; {1091#false} is VALID [2020-07-08 12:44:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-08 12:44:42,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612031169] [2020-07-08 12:44:42,143 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-08 12:44:42,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466774979] [2020-07-08 12:44:42,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-08 12:44:42,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-08 12:44:42,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016393583] [2020-07-08 12:44:42,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-07-08 12:44:42,145 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:44:42,145 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-08 12:44:42,181 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:42,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-08 12:44:42,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:44:42,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-08 12:44:42,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-08 12:44:42,183 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-07-08 12:44:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:42,644 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2020-07-08 12:44:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-08 12:44:42,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-07-08 12:44:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:44:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-08 12:44:42,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2020-07-08 12:44:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-08 12:44:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2020-07-08 12:44:42,652 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 94 transitions. [2020-07-08 12:44:42,765 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 94 edges. 94 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:44:42,767 INFO L225 Difference]: With dead ends: 91 [2020-07-08 12:44:42,768 INFO L226 Difference]: Without dead ends: 55 [2020-07-08 12:44:42,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-08 12:44:42,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-08 12:44:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2020-07-08 12:44:42,813 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:44:42,813 INFO L82 GeneralOperation]: Start isEquivalent. First operand 55 states. Second operand 45 states. [2020-07-08 12:44:42,814 INFO L74 IsIncluded]: Start isIncluded. First operand 55 states. Second operand 45 states. [2020-07-08 12:44:42,814 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 45 states. [2020-07-08 12:44:42,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:42,817 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-07-08 12:44:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-07-08 12:44:42,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:42,818 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:42,819 INFO L74 IsIncluded]: Start isIncluded. First operand 45 states. Second operand 55 states. [2020-07-08 12:44:42,819 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 55 states. [2020-07-08 12:44:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:44:42,822 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-07-08 12:44:42,822 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-07-08 12:44:42,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:44:42,823 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:44:42,823 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:44:42,823 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:44:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-08 12:44:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-07-08 12:44:42,825 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 36 [2020-07-08 12:44:42,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:44:42,826 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-07-08 12:44:42,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-08 12:44:42,826 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-07-08 12:44:42,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-08 12:44:42,827 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:44:42,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-07-08 12:44:43,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-08 12:44:43,044 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:44:43,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:44:43,045 INFO L82 PathProgramCache]: Analyzing trace with hash 60389999, now seen corresponding path program 1 times [2020-07-08 12:44:43,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:44:43,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014091508] [2020-07-08 12:44:43,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:44:43,068 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-08 12:44:43,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790059119] [2020-07-08 12:44:43,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-08 12:44:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 12:44:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 12:44:43,179 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-08 12:44:43,179 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-08 12:44:43,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-08 12:44:43,444 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-08 12:44:43,444 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 12:44:43,444 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 12:44:43,445 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-08 12:44:43,445 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-08 12:44:43,445 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-08 12:44:43,445 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 12:44:43,445 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 12:44:43,445 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 12:44:43,445 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-08 12:44:43,445 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-08 12:44:43,445 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-08 12:44:43,446 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-08 12:44:43,446 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-08 12:44:43,446 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-08 12:44:43,446 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 12:44:43,446 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:44:43,446 WARN L170 areAnnotationChecker]: L11-2 has no Hoare annotation [2020-07-08 12:44:43,446 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 12:44:43,446 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 12:44:43,446 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 12:44:43,447 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-08 12:44:43,447 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-08 12:44:43,447 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-08 12:44:43,447 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2020-07-08 12:44:43,447 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 12:44:43,447 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-08 12:44:43,447 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-08 12:44:43,447 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-08 12:44:43,448 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-08 12:44:43,448 WARN L170 areAnnotationChecker]: L29-3 has no Hoare annotation [2020-07-08 12:44:43,448 WARN L170 areAnnotationChecker]: L49-1 has no Hoare annotation [2020-07-08 12:44:43,448 WARN L170 areAnnotationChecker]: L29-4 has no Hoare annotation [2020-07-08 12:44:43,448 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-08 12:44:43,448 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-08 12:44:43,448 WARN L170 areAnnotationChecker]: L47-2 has no Hoare annotation [2020-07-08 12:44:43,448 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-08 12:44:43,448 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-08 12:44:43,449 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-08 12:44:43,449 WARN L170 areAnnotationChecker]: L29-2 has no Hoare annotation [2020-07-08 12:44:43,449 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-08 12:44:43,449 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-08 12:44:43,449 WARN L170 areAnnotationChecker]: L47-3 has no Hoare annotation [2020-07-08 12:44:43,449 WARN L170 areAnnotationChecker]: L38-4 has no Hoare annotation [2020-07-08 12:44:43,449 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-08 12:44:43,449 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-08 12:44:43,450 WARN L170 areAnnotationChecker]: L47-4 has no Hoare annotation [2020-07-08 12:44:43,450 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-08 12:44:43,450 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-08 12:44:43,450 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-08 12:44:43,450 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-08 12:44:43,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 12:44:43 BoogieIcfgContainer [2020-07-08 12:44:43,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 12:44:43,455 INFO L168 Benchmark]: Toolchain (without parser) took 6388.92 ms. Allocated memory was 138.4 MB in the beginning and 273.7 MB in the end (delta: 135.3 MB). Free memory was 103.6 MB in the beginning and 150.5 MB in the end (delta: -46.9 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. [2020-07-08 12:44:43,456 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 12:44:43,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.51 ms. Allocated memory is still 138.4 MB. Free memory was 103.4 MB in the beginning and 91.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-07-08 12:44:43,458 INFO L168 Benchmark]: Boogie Preprocessor took 195.06 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 91.9 MB in the beginning and 182.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-08 12:44:43,459 INFO L168 Benchmark]: RCFGBuilder took 555.90 ms. Allocated memory is still 205.0 MB. Free memory was 182.5 MB in the beginning and 157.0 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-07-08 12:44:43,459 INFO L168 Benchmark]: TraceAbstraction took 5338.62 ms. Allocated memory was 205.0 MB in the beginning and 273.7 MB in the end (delta: 68.7 MB). Free memory was 156.4 MB in the beginning and 150.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. [2020-07-08 12:44:43,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.51 ms. Allocated memory is still 138.4 MB. Free memory was 103.4 MB in the beginning and 91.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 195.06 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 91.9 MB in the beginning and 182.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 555.90 ms. Allocated memory is still 205.0 MB. Free memory was 182.5 MB in the beginning and 157.0 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5338.62 ms. Allocated memory was 205.0 MB in the beginning and 273.7 MB in the end (delta: 68.7 MB). Free memory was 156.4 MB in the beginning and 150.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=6, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 VAL [\old(N)=0, a={-2:0}, b={-1:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=2] [L29] COND TRUE i